Brewery 304 Seodaemun is a brewery and beer taproom in an alley next to Dongnimmun and Yeongcheon Market in Seoul. It brews its own beer and serves Plutoblond Ale, Helena IPA, and Mint Choco Stout, along with Detroit-style pepperoni pizza baked in a square pan. The second floor is large and comfortable, and the third floor has a private space for about 10 people with a projector for meetings and seminars. The french fries are on the small side.