Yonsei double-patty burger and mozzarella chicken bites: Bas Burger

In short

Bas Burger Yonsei Cancer Hospital Branch is a handmade burger restaurant on basement level B1 in front of Severance Hospital on Yeonse-ro, Seodaemun, Seoul. At Bas Burger, the writer had a Double Bas Burger set with two patties and mozzarella chicken bites, plus James Gam, the handmade potato chips served free and unlimited to dine-in guests. For an easy solo meal and a juicy handmade burger near Yonsei University and Severance Hospital, Bas Burger Yonsei Cancer Hospital Branch is a solid pick.

Double Bas Burger with a soft bun

Good to know

Getting there
Sinchon Station Exit 2 · 9-min walk (store listing, Oct 6, 2026)
Location
B1, 50-1 Yeonse-ro, Seodaemun-gu, Seoul
Hours
Mon–Fri 07:00–20:30, Sat–Sun 10:00–20:30
How to order
Order at the kiosk, then collect your food when the pager buzzes
Dine-in perks
Free unlimited James Gam handmade potato chips and a self-serve sauce bar
Discounts
10% off for Severance staff; morning menu discount
Kids' set
Teriyaki mayo kids' burger + hash brown or fries + orange mango or grape apple juice
What we ordered
Double Bas Burger set (with fries), mozzarella chicken bites (4 pieces)

as written by the visitor on Jun 14, 2026

Where is Bas Burger Yonsei Cancer Hospital Branch?

Bas Burger Yonsei Cancer Hospital Branch is a handmade burger spot near Yonsei University, right in front of Severance Hospital, on the B1 floor at 50-1 Yonse-ro. Staff, students and hospital visitors all drop by because it's easy to eat alone here, so I went to check it out^^

Bas Burger Yonsei Cancer Hospital Branch in front of Severance Hospital
  • Location: 50-1 Yonse-ro, B1, Seodaemun-gu, Seoul (Bas Burger)
  • Hours: Mon–Fri 07:00–20:30 / Sat–Sun 10:00–20:30
Inside Bas Burger Yonsei Cancer Hospital Branch

What are the prices and menu like at Bas Burger?

Even though these are handmade burgers, I felt the single burger prices are on the cheaper side compared with Lotteria or McDonald's. And just like the pictures on the menu, the burgers are packed full inside, so what you get looks exactly like the photo, you know? haha I think that's why people so often name Bas Burger when they talk about the best burger near Yonsei haha

Bas Burger handmade burger menu board

Kids' set and morning menu discount

There's a separate menu for kids too. The kids' set has a teriyaki mayo kids' burger with a choice of hash brown or fries, plus a choice of orange mango or grape apple juice from Bread Barbershop. Pretty decent, right?! haha

Bas Burger teriyaki mayo kids' burger set menu

Bas Burger also has a morning menu discount, so I think it's great for busy office workers who want a light meal in the morning haha

Bas Burger morning menu discount notice
Bas Burger Yonsei Cancer Hospital Branch menu information

Is Bas Burger Yonsei Cancer Hospital Branch good for eating alone?

The shop is spotlessly clean! Since it's burgers, eating alone doesn't feel awkward and you don't feel anyone watching you~ haha

Clean interior of Bas Burger Yonsei Cancer Hospital Branch

Severance staff get a whole 10% discount!! Everyone else orders at the kiosk, then be sure to grab the vibrating pager next to it haha

Bas Burger kiosk and vibrating pager ordering area

Lots of people use the area around the self-serve bar, yet it's always kept clean 👍👍

Tidy self-serve bar at Bas Burger

The country-of-origin labels are super clear too!!

Country-of-origin sign at Bas Burger Yonsei Cancer Hospital Branch

What are the unlimited free chips (James Gam) at Bas Burger like?

Bas Burger gives dine-in customers handmade potato chips called James Gam for free, and unlimited refills at that. That's Bas Burger class!!!

Free potato chip station at Bas Burger

You'd think unlimited chips would be soggy or something, right?? Not at all!!!! Crispy, a little salty, and you never get tired of them no matter how many times you go back for more!!!

Unlimited handmade potato chips (James Gam)

You can take as much sauce as you like from the self-serve bar, so if you love ketchup, you can pile it onto your chips without feeling self-conscious lol

Sauces and chips taken from the self-serve bar
Bas Burger chips with ketchup

Before the burger arrives, you can fill your slightly hungry stomach with crispy chips while you wait lol They're a bit thick, so the crunch is really nice haha

Thick potato chips to eat while waiting for the burger

How big and how tasty is the Double Bas Burger?

And finally, the burger arrived!!!

Double Bas Burger set on the table

The Double Bas Burger looks really big even in photos, and in person it's even bigger. It's a double, so two patties!!

Double Bas Burger with two patties

You can tell at a glance that the bun itself is soft and fluffy and delicious!! This is exactly why handmade burgers taste so good!!

Double Bas Burger with a soft bun

Take a bite and the patty is tender and bursting with juice, with real meaty flavor in the Double Bas Burger!!! Want a hearty, juicy handmade burger? Then I recommend Bas Burger's Double Bas Burger!!!

Juicy patty of the Double Bas Burger

Are the mozzarella chicken bites at Bas Burger worth ordering?

The mozzarella chicken bites have way more cheese than the ordinary cheese sticks we usually imagine, and they're crispy too, so I highly recommend them!!!!

Bas Burger side: mozzarella chicken bites
Mozzarella chicken bites served with ranch dip
Crispy fried mozzarella chicken bites

A burger really does need a side like the mozzarella chicken bites~ Dip them in the ranch sauce and it cuts the richness and brings out a fresh tang, so they taste even better~

Mozzarella chicken bite cut open with stretchy cheese

They're stuffed with cheese and freshly fried, so it stretches out and stretches out~~~ Even with 4 pieces, I was sad every time one disappeared, honestly! haha

Fries from the Double Bas Burger set

Set fries vs. chips

I ordered the Double Bas Burger as a set, so I had the fries too, and both the chips and the fries are good. If the chips are crispy, the fries are moist and soft!!!!

If you're looking for a burger place near Yonsei University and Severance Hospital that's good for eating alone, with juicy handmade burgers, I recommend Bas Burger Yonsei Cancer Hospital Branch^^

Where it is

Bas Burger Yonsei Cancer Hospital Branch바스버거 연세암병원점

50-1 Yonse-ro, B1, Seodaemun-gu, Seoul, South Korea서울특별시 서대문구 연세로 50-1 B1 바스버거

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