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Flex Mussels is praised for its fresh seafood offerings, particularly the variety of mussels prepared in diverse sauces. The atmosphere is lively and the service is attentive, making it a popular choice for both casual and special occasions. Some patrons have noted inconsistencies in portion sizes and seasoning, but overall, the dining experience is well-regarded.

Discover Flex Mussels: Manhattan's Seafood Gem on 3rd Avenue 

Nestled in the heart of Manhattan at 1431 3rd Avenue, Flex Mussels offers an unforgettable seafood dining experience that captures the vibrant energy of New York City. Known for its casual yet lively atmosphere, this hotspot specializes in a variety of fresh Prince Edward Island mussels prepared in inventive ways, alongside an array of delectable oysters and seafood dishes. Whether you're craving a sumptuous brunch, a relaxed lunch, or a flavorful dinner, Flex Mussels caters to all your seafood desires with flair and finesse.

Flex Mussels is praised for its fresh, high-quality seafood and the inventive ways it transforms classic dishes. Highlights include the Thai and Parma mussels, which are crowd favorites, and the passion fruit crudo that adds an exotic twist to the menu. Their happy hour is a local favorite, featuring $2 oysters and $25 moules frites—mussels paired with crispy shoe string fries—the perfect combo for seafood lovers and social gatherings alike. Plus, the cozy interior and outdoor seating make it an ideal spot to soak up the lively Upper East Side vibe.

From a leisurely weekend brunch featuring innovative egg dishes and one-of-a-kind donuts to an elegant dinner with perfectly crafted cocktails, Flex Mussels offers a versatile menu that suits every mood. Their dedication to quality and service shines through the friendly staff who make every visit memorable. Located just a 10-minute walk from the MET, it's a perfect dining destination after a day of cultural exploration.

 including diverse mussel preparations and oysters.

 perfect for casual dining and special occasions.

 from a professional team ensuring a memorable visit.

 close to cultural landmarks like the MET and accessible by public transport.

Frequently Asked Questions About Flex Mussels

What are the operating hours of Flex Mussels?

 Flex Mussels operates Monday to Thursday from 5:00 PM to 10:00 PM, Fridays and Saturdays from 11:00 AM to 10:30 PM, and Sundays from 11:00 AM to 10:00 PM.

Do they offer takeout and delivery services?

 Yes, both takeout and delivery options are available for a convenient seafood feast anywhere you like.

 Yes, guests can enjoy their meals in the fresh air with the restaurant's inviting outdoor seating.

 Yes, Flex Mussels hosts a daily happy hour with specials on oysters and select menu items.

 Yes, Flex Mussels is fully wheelchair accessible to accommodate all guests.

Flex Mussels enjoys a positive reputation in the local community, with many diners highlighting the freshness and variety of its seafood, especially the mussels and oysters. The energetic yet cozy atmosphere is perfect for both casual meetups and special celebrations. Attentive and professional service adds to the overall delightful experience, making it a must-visit for seafood enthusiasts exploring New York City's vibrant Upper East Side.

North America

United States

Located at 1431 3rd Ave in Manhattan, Flex Mussels is a seafood haven that specializes in various preparations of Prince Edward Island mussels. This vibrant establishment combines a casual atmosphere with a commitment to quality, making it a popular choice for both locals and visitors. With a history rooted in a passion for seafood, Flex Mussels has become a staple in New York’s culinary scene, offering a unique dining experience that emphasizes freshness and flavor.

Flex Mussels offers a diverse menu that highlights the versatility of mussels, complemented by a selection of seafood dishes and delectable desserts. The ambiance is cozy and inviting, perfect for enjoying a leisurely meal with friends or family. Notable dishes include:

Thai Mussels - A flavorful twist with aromatic spices.

Parma Mussels - Infused with rich flavors and served with crusty bread.

Moules Frites - A classic pairing of mussels and fries, a must-try!

Passion Fruit Crudo - A refreshing starter that tantalizes the taste buds.

Delicious Donuts - A sweet ending that leaves a lasting impression.

Flex Mussels provides a casual yet refined dining experience, perfect for gatherings or celebrations. The restaurant features outdoor seating, making it an excellent choice for enjoying a meal al fresco during warm weather. With a menu that caters to various tastes, it’s ideal for both seafood lovers and those seeking a delightful dining experience.

Situated in the vibrant neighborhood of Manhattan, Flex Mussels is conveniently located near cultural landmarks such as the Metropolitan Museum of Art. This proximity makes it a perfect stop for art lovers looking to refuel after a day of exploration. The surrounding area is rich with shopping and entertainment options, ensuring a full day of enjoyment.

Whether you're a seafood aficionado or simply looking for a delightful meal, Flex Mussels in New York offers an unforgettable dining experience. Come and enjoy the flavors of expertly prepared mussels and more in a warm, inviting atmosphere.

Seafood & desserts plus variously prepared Prince Edward Island mussels in a casual setting.

https://www.google.com/local/review/rap/report?postId=ChdDSUhNMG9nS0VJQ0FnSUNYekw2QzN3RRAB&d=17924085&t=1

places/ChIJt901K7xYwokRDN0HETz2x3s/reviews/ChdDSUhNMG9nS0VJQ0FnSUNYekw2QzN3RRAB

What a wonderful brunch experience!! Entire staff was wonderful. Professional and polite, they are entirely dedicated to the work they do. Clearly they're a great team. The food was delicious! The donuts are a must try! They were like nothing I've ever had before. The bacon, egg and cheese was fantastic! Not to mention the very tasty coffee! The establishment was cozy with a terrific brunch vibe. Can't wait to go back for the mussels.

https://www.google.com/local/review/rap/report?postId=ChdDSUhNMG9nS0VJQ0FnSUNfc05uLTV3RRAB&d=17924085&t=1

places/ChIJt901K7xYwokRDN0HETz2x3s/reviews/ChdDSUhNMG9nS0VJQ0FnSUNfc05uLTV3RRAB

Thai & Parma mussels were our favorite. The lobster mussels were probably our least, surprisingly. Passion fruit crudo was amazing. Complimentary bread also great! Great service.

https://www.google.com/local/review/rap/report?postId=ChZDSUhNMG9nS0VJQ0FnSUM3dDl2ZEhREAE&d=17924085&t=1

places/ChIJt901K7xYwokRDN0HETz2x3s/reviews/ChZDSUhNMG9nS0VJQ0FnSUM3dDl2ZEhREAE

The decor is very attractive, but did make up for my disappointing meals. Unfortunately, I have eaten here twice when the mussels had no taste of their own. In those cases, when I had their "classic" mussels ($28), it was only the white wine sauce at the bottom of the pot of mussels that offered flavor. The sauce was most beneficial when bread was dipped in it. I found that their "big sister" oysters (6 for $24) were too salty for me.

https://www.google.com/local/review/rap/report?postId=ChdDSUhNMG9nS0VJQ0FnSUNmM0k2eXh3RRAB&d=17924085&t=1

places/ChIJt901K7xYwokRDN0HETz2x3s/reviews/ChdDSUhNMG9nS0VJQ0FnSUNmM0k2eXh3RRAB

Nice flex at $2 Happy hour oysters! Excellent quality oysters and a bunch of other items included for happy hour including $25 moules frites ( mussels and fries, their speciality ). Highly recommend the oysters, Thai mussels and shoe string fries 💪🏽

https://www.google.com/local/review/rap/report?postId=ChZDSUhNMG9nS0VJQ0FnSUNydHFEc0hnEAE&d=17924085&t=1

places/ChIJt901K7xYwokRDN0HETz2x3s/reviews/ChZDSUhNMG9nS0VJQ0FnSUNydHFEc0hnEAE

Ended up at Flex Mussels around odd time between lunch and dinner, desperate for foods after visiting the MET. We had happy hour foods, including guacamole, deviled eggs, fish tacos, and regular french fries.
We initially ordered 1 taco for each person but ordered 1 more each again, as it was so delicious. One of the best fish tacos I have ever tried.
The guacamole was ok - our kind server brought us more chips. Deviled eggs were unbelievably soft - my kids enjoyed them.

The restaurant has a fairly cozy atmosphere, with surprisingly adequately distanced seating. Located in a 10-min walking distance from the MET. Our server was friendly and decent.

Delicious Seafood Brunch at Flex Mussels, NYC

Flex Mussels is an upscale seafood restaurant specializing in mussels prepared in 23 different sauces, drawing influence from around the world. The restaurant has expanded from its original location in Prince Edward Island to multiple locations, including the Upper East Side in New York City.

A flavorful journey of Flex Mussels in New York City 

Flex Mussels, a beloved seafood restaurant with roots in Prince Edward Island, Canada, has made a remarkable splash in New York City's vibrant dining scene. Renowned for its fresh, sustainably sourced seafood, particularly creatively prepared Prince Edward Island mussels, Flex Mussels has become a go-to destination for seafood lovers seeking authentic flavors in a casual yet inviting atmosphere.

The first Flex Mussels opened its doors in 2008 on the Upper East Side of Manhattan. This initial location quickly gained a reputation for serving vibrant seafood dishes with a focus on mussels prepared in inventive ways that highlight their natural taste. Building on this success, a second venue debuted in 2010 in the West Village, expanding the brand’s reach and appeal.

Most recently, in 2022, Flex Mussels reaffirmed its commitment to the Upper East Side community by opening a new location at 1431 3rd Avenue. This modern space captures the essence of the brand with a cozy ambiance perfect for diners who appreciate fresh seafood paired with an inviting brunch vibe, excellent service, and a diverse menu that includes everything from classic mussels to delightful desserts.

Flex Mussels’ specialty is its commitment to showcasing the finest Prince Edward Island mussels, 

offering a variety of preparations that cater to diverse palates. From the savory Thai and Parma mussels to the indulgent classic white wine sauce, every dish is thoughtfully crafted to balance rich flavors and freshness. The restaurant’s casual setting, highlighted by an inviting brunch atmosphere and attentive staff, makes it a favorite for groups and solo diners alike.

Flex Mussels prioritizes fresh, responsibly harvested mussels from Prince Edward Island.

Diners can enjoy mussels prepared in various styles, accompanied by tasty sides like shoe string fries and unique desserts.

The restaurant's cozy atmosphere and polite, professional staff create a memorable dining experience.

Flex Mussels is a charming seafood restaurant located in Manhattan, New York, known for its innovative take on Prince Edward Island mussels and a variety of seafood dishes in a casual setting. The inviting decor and vibrant ambiance make it a perfect dining spot for seafood lovers.

Mussels

Flex Mussels Menu

Flex Mussels

Flex Mussels is a charming eatery in Manhattan, known for its innovative seafood dishes, particularly its variously prepared Prince Edward Island mussels. The casual setting and warm decor create an inviting atmosphere for seafood lovers and diners looking for a unique culinary experience in New York City.

Classic Mussels

Thai Mussels

Lobster Mussels

A selection of fresh seafood dishes, including a variety of mussels prepared in different sauces, salads, and sides.

Fra Diavolo Mussels

Parma Mussels

Dijon Mussels

Fungi Mussels

Bobby’s Seafood Boil

Bouillabaisse

Scampi Mussels

Lobster Roll

Char Grilled Burger

Ricotta Toast

Guacamole

Deviled Eggs

Fried Clam Strips

Fish Tacos

Kale Salad

Caesar Salad

Bibb Salad

Flex Fries

Dinner Menu

Flex Mussels, located in the vibrant Manhattan neighborhood, offers a delightful seafood experience with a focus on various preparations of Prince Edward Island mussels. The culinary philosophy revolves around fresh ingredients and innovative flavors, creating a casual yet refined dining atmosphere. The menu features a selection of seafood and desserts, making it a go-to spot for seafood lovers.

Classic Mussels - Prepared with white wine, herbs, and garlic for a timeless flavor.

Thai Mussels - Infused with a curry coconut broth, lemongrass, and ginger for a unique twist.

Parma Mussels - A creamy blend of Parmigiano, lemon, and crispy shallots for a rich experience.

Bouillabaisse - A luxurious saffron broth with lobster and white fish, perfect for seafood enthusiasts.

Flex Mussels offers a curated selection of wines and craft cocktails that pair beautifully with the seafood dishes. The knowledgeable staff can recommend the perfect wine to complement your meal, enhancing the overall dining experience.

Flex Mussels is committed to accommodating various dietary preferences, offering vegetarian and gluten-free options. The menu is designed to cater to diverse tastes, ensuring that everyone can enjoy a memorable meal.

For a truly exceptional experience, the chef recommends trying the Fra Diavolo Mussels, which are infused with San Marzano tomatoes and fresh basil, or the Bobby’s Seafood Boil, featuring a delightful mix of crawfish and shrimp.

Join us at Flex Mussels in New York for an unforgettable seafood dining experience. Whether you're a local or just visiting, our menu promises to delight your palate with every bite.

Delight in fresh seafood at Flex Mussels on 3rd Ave, NYC! Savor mouthwatering dishes and vibrant drinks. Book your table now!

Flex Mussels: Fresh Seafood Dining in NYC

New York County

Includes a selection of mussels and fries during happy hour.

Happy Hour

Roasted half lobster with garlic herb butter and fries.

Lobster Frites

Discover Flex Mussels: A Seafood Haven in Manhattan's Upper East Side

Nestled at 1431 3rd Avenue in the heart of New York City's Upper East Side, Flex Mussels offers an enticing seafood experience that is perfect for food lovers and urban explorers alike. Known for its vibrant atmosphere and specialty in Prince Edward Island mussels prepared in a variety of mouthwatering styles, this casual yet stylish bar and restaurant has become a standout destination for locals and visitors.

A Flavorful Journey Through Mussels and More

Flex Mussels is celebrated for its varied preparation of PEI mussels that delight the palate with unique sauces and spices. Favorites among patrons include the Thai mussels bursting with aromatic flavors and the Parma mussels with a savory twist. While the lobster mussels may not be the top pick for everyone, the passion fruit crudo has been singled out as an exceptional dish worth trying. Paired with complimentary freshly baked bread, each meal here becomes a memorable culinary adventure.

Don't miss the delectable brunch offerings, especially the innovative donuts and the classic bacon, egg, and cheese sandwich, perfectly complemented by rich, flavorful coffee.

Enjoy a Dynamic Atmosphere with Flexible Dining Options

Whether you're settling in for a cozy dine-in meal, grabbing a quick takeout, or having your favorites delivered to your door, Flex Mussels caters to your dining preferences. The spot features inviting outdoor seating perfect for soaking up the bustling Manhattan vibe under the open sky.

Happy hour enthusiasts will find a great reason to visit daily, with specials on $2 oysters and select menu treasures like their signature moules frites—classic mussels paired with crisp shoe string fries. The bar also serves a variety of beers, wines, and expertly crafted cocktails to complement your meal.

 on fresh oysters and select dishes at the bar.

 featuring Thai, Parma, and classic styles with complementary bread.

 with indoor seating and a charming outdoor patio.

 options for enjoying delicious seafood at home.

 who deliver attentive service and a welcoming vibe.

Flex Mussels welcomes brunch lovers, lunch crowds, and dinner guests alike, serving an extensive menu throughout the day with options for coffee, cocktails, and delicious desserts. While the venue is not child-friendly, it excels in catering to groups and seafood aficionados seeking quality and variety. Paid street parking is available nearby, and the establishment accepts credit, debit, and contactless payments for added convenience.

Located at 1431 3rd Ave, New York, NY, Flex Mussels is a seafood haven specializing in various preparations of Prince Edward Island mussels. This casual dining spot offers a lively atmosphere and a menu that features fresh seafood and delightful desserts. With a focus on quality and service, Flex Mussels has become a popular destination for both locals and visitors alike.

The establishment is well-known for its brunch offerings, including must-try donuts and a cozy vibe that enhances the dining experience.

Flex Mussels is not just a place to eat; it's a community hub where food lovers gather to enjoy quality dishes in a welcoming environment.

The restaurant's commitment to fresh seafood and attentive service makes it a standout choice in Manhattan.

With a focus on mussels, the menu offers a variety of preparations that cater to different tastes, ensuring there's something for everyone.

Overall, Flex Mussels is a delightful spot for seafood enthusiasts looking for a casual yet vibrant dining experience in New York City.

• Noise level can be high during peak hours

• Reservations are recommended, especially during peak hours.

• Happy hour specials are available, featuring $2 oysters and discounted mussels.

• Located within walking distance of the MET, making it a great stop after museum visits.

Flex Mussels provides a delightful seafood experience in a vibrant setting. While there are some inconsistencies in portion sizes and pricing, the overall quality of the food and service makes it a worthwhile visit.

Whether you're a local or a tourist, Flex Mussels is an excellent choice for those looking to indulge in fresh seafood in Manhattan.

Vilken otrolig plats - från det underbara mottagandet till den fantastiska roliga atmosfären till den fantastiska servitören - tack Taylor - till den fantastiska läckra maten - till den effektiva och hårt arbetande busspersonalen - Flex Mussels bör vara i din lista

Bra lågmäld grannskap fiskrestaurang. Åkte lunch mitt i veckan. Super hjälpsam personal. Vi hade ostron, räkcocktail, moules frites - allt utmärkt. Skulle återvända.

Ärligt talat förväntade jag mig något bättre. Det tidigare, numera stängda läget, på W 13 Street, om än mindre, erbjöd en mer pittoresk miljö med bättre smakrätter. 
Priserna är också utanför de förväntade . 
Middag för två med en förrätt, en dessert och två huvudrätter 165 dollar. 
Jag vet inte om det är en väktare.

Jag hade en mycket nedslående upplevelse på er restaurang den 27 april 2025 , klockan 17 : 00 PM. Jag har besökt denna restaurang flera gånger tidigare utan några problem, men den här gången stod jag inför en oacceptabel situation. Jag var med min tjänstehund, och personalen, inklusive någon som tillfälligt fungerade som chef, behandlade mig respektlöst. Min tjänstehund vilade tyst i mitt knä, och jag hade laglig rätt att ha henne med mig. Men i stället för att följa lagen och visa professionalism agerade personalen på ett okunnigt och fientligt sätt. 
I slutet av vår interaktion, när jag betalade min räkning, sa den anställde faktiskt till mig: ”Jag hoppas att du aldrig kommer tillbaka hit.” Ingen manager i New York skulle någonsin bete sig så här. Detta var en uppenbar kränkning av mina rättigheter och en fullständig brist på respekt för kunderna. Jag kommer inte att återvända till denna restaurang och rekommenderar starkt andra att undvika det också.

Ljudnivån är irriterande och att spela musik gör det värre. Vinlistan är konstig och dyr. De har många varianter på musslor men bara en av dem är typisk. Hummerpommesen låter bra men är en dyr liten grillad hummer och massor av pommes frites. Fisktacos är goda, precis lagom mycket värme. Hummerrullen rostades för länge och hade minimalt med hummer för 35 dollar. Vill du ha musslor? Prova ett av UES franska ställen.

Vi var mycket nöjda med deras 82 gatuläge. Och bestämde sig efter flera år för att prova tredje avenyn plats. Tärningarna var en hel del större med en stor öppen yta med plats för en högljudd glad publik. Servicen var ganska bra och deras hantverk öl i burkar var också bra. Problemet var den dåliga kvaliteten på musslorna med grynighet och den knappa kvantitet som levererades. Vi hade båda problem med olika typer av musslor och klagade till chefen. Han jämförde desserter som var ok men när din primära maträtt är avstängd det bokstavligen lämnade en dålig smak i våra munnar. 
Kanske hade de en dålig dag och en dag kanske vi försöker igen men detta minne är ganska skarpt. Snälla, städa upp dina musslor!

Allt från våra läckra aptitretare till vår dessert var fantastiskt! Servicen var förstklassig. Mycket uppmärksam, vänlig höll oss informerade om vår beställning. Utsökta cocktails och vinval. Vacker atmosfär. Definitivt återvänder!

Hade middag här i går kväll. Så många musslor var det svårt att bestämma vad man skulle få. Så vi beställde alldeles för mycket utsökt mat!

Jag gick på en söndag och använde mig av happy hour-menyn! Jag fick ett dussin ostron och musslorna med vitt vin. Grymt bra. Avslappnad atmosfär. Jag hade gått 19 000 steg och jag förtjänar en bra middag. Jag fick också flex donuts och sparat 3.

Muslingen var utmärkt. Jag hade en kryddig röd sås som skulle dö för. Tjänsten var mycket bra. Sammantaget var det en trevlig upplevelse.

Denna restaurang är en dröm som har gått i uppfyllelse och jag har besökt i över 6 år. Musslor får inte den exponering de behöver och jag försöker få dem var jag än kan. Dessa killar måste vara tillgängliga i andra städer i USA! Älska platsen!

Besökande familj och svärföre valt Flex Mussels till vår första dagsmiddag. Vi delade några av PEI råa ostron och de var bra. Jag älskar ostron och har ett par platser som jag litar på i min hemstad DC och är läckra för de flesta där. Han försökte olika PEI-erbjudanden och blev inte besviken. Kunde ha gjort en måltid av dem ensam. Om du kommer under happy hour och du sitter i baren är de bara $ 1. 50 vardera. Önskade att jag läste skylten innan vi satt vid ett bord och beställde musslor men glad att jag gjorde efter att ha fått mina musslor. Vi hade Fra Diavolo, Classic och mexikanska versionerna. Allt lika bra. Med bröd för doppning var bara ett bra sätt att njuta av såser. Vi hade också en sida av pommes frites med vit tryffel riven på toppen.

Om du är en ostron- och muslingfläkt måste du ge denna plats ett försök. definitivt en gör om.

Mycket upptagen restaurang som serverar fantastiska färska muskler. Jag har varit där både på ett datum och med en liten grupp vänner och det är alltid utmärkt. De har gott vin, aptitretare och dessert också.

Allt man kan förvänta sig med superfärska ostron till gott vin och service! Definitivt en dold pärla där det är utanför misshandlad väg.

Verkligen utsökt musslor och för NYC inte dyrt alls. Jag rekommenderar hellre SAN DANIELE - eller PARMA-musslor med parmigianocreme, citron, scallions, rostat vitlök och sjalottor. Tjänsten var vänlig och mycket uppmärksam. Ett trevligt ställe för en natt eller middag med vänner.

Curry Musslor och säsongens svamp utmärkt! Service top notch — vi rekommenderar starkt restaurangen ! Gå dit och ta en Mezcal

Lyckades få en sen reservation här medan vi var i staden i 4 nätter. Jag och min pojkvän älskar båda musslor så vi trodde att vi skulle prova denna plats och vi blev inte besvikna. Vår servitris (glömde hennes namn) var så härlig och verkligen hjälpsam. Muslingen var så färsk och välsmakande! Så glad att vi kunde få en reservation. Min pojkvän sa att donuts var också riktigt bra men jag var för full för att äta min del!

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