Ratings
Review split — 1,415 on Korean platforms, 20 on Google. In Korea, Google reviews come mostly from visitors and Naver/Kakao/DiningCode mostly from Koreans. See where Koreans eat or where visitors eat.
Average ★ 4.3 across 3 sources (DiningCode's 100-point score converted to 5).
Why here
A sandwich counter tucked into a residential block in Changjeon-dong, close enough to Hongdae to be walkable but hard enough to find that most people arrive with directions open. Four or five sandwiches at a time — egg omelette with sriracha on brioche, mashed potato on baguette, grilled pesto with mozzarella — between ₩9,000 and ₩12,000.
Order this
Know before you go
₩ · Under ₩15,000 per person
Sandwiches ₩9,000-12,000 (Diningcode menu, 2026-07)
11:00-19:00, last order 18:00 (Diningcode, 2026-07)
Changjeon-dong (near Hongdae), Mapo
마포구 서강로11길 36-35, 블루미하우스 1층 (창전동) — show this to your taxi driver
Photos
Photos provided by the restaurant
Who's featured this place
From the YouTubers, broadcasters and guides we track — most-trusted first.
- Chef Park Joon-woo — 홍대에서 제일 찾기 힘든 샌드위치 집, 맛은 어떨까? 2026-01-31
Good to know
What is A Slice?
A Slice is a café and dessert restaurant in Changjeon-dong (near Hongdae), Seoul, operating since 2024. The dish to order is Egg omelette sandwich.
Do I need a reservation at A Slice?
No — A Slice is a walk-in spot, no reservation needed.
How much does A Slice cost per person?
Expect under ₩15,000 per person at A Slice. Sandwiches ₩9,000-12,000 (Diningcode menu, 2026-07)
Can I order at A Slice without Korean?
We haven't confirmed whether A Slice keeps an English menu — most neighbourhood spots in Seoul don't. This page lists what to order in English, and the restaurant's Korean name is printed on it, so you can show the name at the door and order by pointing at the counter. Cards are accepted almost everywhere, and there is no tipping.
Nearby:
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More sandwiches:
Last checked ·