At O’Sullivan’s, they fire up the grill for about 400 pounds of hamburger every week. These burgers are big. Each belly-busting beast is a half-pound of fresh-ground sirloin. To cook a burger this thick and juicy takes patience, and about 20 minutes.

R.F. O'Sullivan & Son
Reviewed from Google

4.5 out of 5 stars

Pavel Panchekha
Pavel Panchekha

5 out of 5 stars

posted 1 week ago

I've taken dozens of people here and they all agree that it's the best burger they've ever had. I went here all the time in my college days. Good and unassuming burgers that have been around for thirty years! Every time, I have an amazing, juicy, flavorful burger, grilled to perfection.

henry augustin
henry augustin

5 out of 5 stars

posted 2 months ago

Small but intimate setting. Extremely nice servers and awesome burgers. So far I have not had a better burger. There's a bunch of different types of burgers and the rest of the did is actually very good too. Loved the nachos topped with lots of melted cheese and large chunks of grilled chicken breast. Definitely a place I'd recommend. If you like burgers. You'll love this place.

Florian Wahl
Florian Wahl

5 out of 5 stars

posted 2 months ago

One of the best burgers I have ever eaten! The open kitchen on the bar gives a great peak at what's going on with your food! Additionally, good selection of local draft. Highly recommend!

Kaylyn Munns
Kaylyn Munns

5 out of 5 stars

posted 2 months ago

Such a cute hole in the wall place! The hamburger was so yummy and their style fries were so good. The customer service was great and I would recommend giving them a shot!

Jonathan Stein
Jonathan Stein

5 out of 5 stars

posted 2 weeks ago

One of the best burgers I've ever had in my entire life. Perfectly cooked, with ample toppings with a soft, toasted roll which was also amazingly fresh! I will be back!

Address

Address:

282 Beacon St, Somerville, MA 02143, USA

Telephone:

Opening Hours

Monday

11:00 am – 11:00 pm

Tuesday

11:00 am – 11:00 pm

Wednesday

11:00 am – 11:00 pm

Thursday

11:00 am – 11:00 pm

Friday

11:00 am – 11:00 pm

Saturday

11:00 am – 11:00 pm

Sunday

11:00 am – 11:00 pm