Sillim cocktail bar open until 4am: Long Island Iced Tea at Yahwa
Yahwa Sillim is a cocktail bar on the basement level at 1600-12 Namburounhwan-ro near Sillim Station in Gwanak, Seoul, set up for drinking alone. The writer ordered a Long Island Iced Tea and a 355ml Budweiser with truffle potato chips and cinnamon orange, drank quietly solo, and found the staff helpful in explaining the menu. With hours of 20:00 to 04:00, Yahwa Sillim works well as a late-night solo drinking spot.

