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Flex Mussels

(Now Closed)

Seafood Restaurant$$$$

Upper East Side, New York

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Flex Mussels

The experts at The New Yorker and Serious Eats recommend this place

179 Tips and reviews

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Serious EatsAugust 10, 2013
A mussel-centric menu that has some great desserts as well.
James H.November 17, 2019
Oysters were good but smallish. Fried clams were good. Not impressed with classic mussels. Sauce was lacking flavor and mussels were small. Beer draft was good. Bread was excellent. Okay overall.
Jennie D.November 13, 2013
I used to not like mussels until I came here - Flex has made me a convert! The Parma and Thai mussels are unreal.
Lina LanovoiAugust 18, 2015
Been here 5+ times
The salted caramel donuts are amAzing
Jeanne SperanzaMarch 22, 2017
You can't go wrong with any dish! Octopus appetizer was delish!
Brew LatelyApril 10, 2019
Flavorful mussels, $1,50 oysters on happy hour and some drink specials
YaniqueAugust 28, 2014
The seafood is orgasmic,enough said! Make your reservations early though to ensure you get a decent seat.
Nitzan BMarch 8, 2017
So good. Had a great time. Leave room for their donuts!
Amy RobertsonFebruary 5, 2015
Been here 5+ times
Obviously the mussels are phenomenal; the donuts are a surprising delight
Jackie CollensOctober 6, 2013
Incredible! Only problem is the chairs. You slide right out!
New York HabitatDecember 9, 2011
When at a restaurant with mussels in the name, it should be obvious what to order. The real prize however are the truffle fries.
Kim MullingsJuly 31, 2013
Lobster Bisque mussels were amazing and the burnt fingers app. was great too!
Magdolen KellelJanuary 19, 2013
Been here 5+ times
Get the Parma mussels!! And don't forget to have the salted caramel donuts for dessert!!
Thomas CohnJune 24, 2016
Try different mussel dishes each time; all are excellent!
Nasira Ju-manAugust 3, 2015
Amazing mussel flavors and their doughnuts are so fluffy!
Jacqueline XuFebruary 11, 2013
Awesome French onion mussels and lobster Mac and cheese. Truffle fries is ok though. Great staff.
Jake LangbeckerJanuary 18, 2015
Come for the mussels, stay for the donuts
MaddieMay 27, 2013
Been here 5+ times
I want to try everything. Thai = check. Maine and The Southern tonight
jenn laroccoMay 8, 2010
From the fresh french fries to the pots of mussels (try the bisque or the fungi) this place is amazing! And you cannot leave with out trying the donuts
Mona FetouhJuly 3, 2013
The salted caramel donuts are amazing. Great, very fresh mussels too.
KarstenSeptember 2, 2014
Been here 5+ times
You gotta order the donuts (salted caramel or bust)
Lindsay BrookeJanuary 12, 2015
PLEASE go and please get the Parma mussels.
Sarah O'ConnellNovember 26, 2016
Just amazing. Try mussels with a curry base!
Howard ShihJune 17, 2016
Mussels & Beer for happy hour is a great deal!
Lance LacoffFebruary 10, 2013
Came for the mussels, and they were great, but the salted caramel doughnut changed my life.
Parissa BehniaMay 6, 2014
Thai curry mussels are great! So are the truffle fries!
Nina LoSchiavoJune 24, 2015
The parm mussels are insanely good. Don't skip dessert.
Abdullah Bin DhaherAugust 8, 2014
Great food , try the mussels , lobster role, calamari
EdizSeptember 9, 2016
Mussels are delicious.
Lauren GilchristJuly 11, 2012
Same deal as downtown. Mobbed on Thursday night. Saturday afternoon is better, try for one of the three outdoor tables.
Karen Au YeungApril 19, 2015
Don't forget to order the donuts at the end of the meal!
Matthew KutnickDecember 30, 2011
Bisque and Parma are favorites. Be sure to try the Old Bay Fries and Doughnuts also.
Taylor GerardApril 11, 2015
Best mussels in the city - mussel equivalent to mermaid inn
Geraldine🍓 RochaMarch 25, 2012
We had the Classic and the Parma, they were good but the mussel pot is still my fav
Giovanni MelendezNovember 13, 2015
The parm mussels are awesome and so are the donuts
Ryan GallagherSeptember 20, 2016
Been here 5+ times
Always great. The Thai mussels are legit.
carolyn bosAugust 26, 2012
Been here 5+ times
Oysters, truffle fries, Marseilles and Maine mussels are sinful. Yeah, sinful.
Val WollochJune 7, 2012
Been here 5+ times
Go in through the back door on East 50th Street instead of through the front on Rockerfeller Plaza on busy days.
MarineFebruary 5, 2016
Great choice of mussels
Nikki PamaniJuly 26, 2011
Seafood lovers heaven! Giant pot of mussels and more than 20 sauces to choose from. TASTY! Read more
Eric LJune 15, 2012
Get an off menu alcoholic doughnut, the s'mores one, and the salted caramel one.
ron duqueAugust 29, 2014
Salted Caramel is the best donut here, hands down.
Christa HoeglerFebruary 3, 2014
Been here 5+ times
Parma mussels are all they're hyped up to be. Save the bread to dunk into the sauce!
The New YorkerSeptember 30, 2010
“The name, though reminiscent of a Tarzan boast, is apt: Flex Mussels forgoes European and American tradition and puts the mussel on steroids.” Read more
Matthew CoolOctober 26, 2011
Had the San Daniele mussels with a Lobster Ale draft beer from Maine - both great
Vivian VoMarch 13, 2015
I recommend the Thai or Parmesan flavored mussels
CompassApril 18, 2014
Moules frites come in 23 different varieties at the seafood chainlet.
Richard LueDecember 26, 2016
The donut dessert is to die for
Caroline SchulweisFebruary 12, 2017
Been here 5+ times
The Dijon mussels were our table's favorite.
Barrett LaneMay 29, 2011
The Maine mussels are a must; steamed mussels in a creamy broth with parsley, bacon, and lobster. Fries are ok.

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