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.

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^^

- Location: 50-1 Yonse-ro, B1, Seodaemun-gu, Seoul (Bas Burger)
- Hours: Mon–Fri 07:00–20:30 / Sat–Sun 10:00–20:30

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

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 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


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

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

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

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

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!!!

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!!!

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


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

How big and how tasty is the Double Bas Burger?
And finally, the burger arrived!!!

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

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!!!

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!!!!



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~

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

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





