The Hong Kong sustainable-cocktail bar's Bangkok outpost, built around hyper-local Thai upcycled ingredients.
Penicillin Bangkok sits on Sukhumvit 49 in Thonglor, the second outpost of Hong Kong's Asia's 50 Best regular which opened in late 2024. The bar follows the original's zero-waste programme: every cocktail starts from a fermented or upcycled Thai ingredient sourced within 300 kilometres of Bangkok.
This is the room for a drinker who tracks Asia's 50 Best results and wants to see what Agung Prabowo's sustainability template looks like with Thai pantry inputs. Skip it if a B280 highball and a sidewalk seat is the night you wanted.
Walk in or contact the bar via official channels. For weekend table seating, confirm hours through the bar's site or social pages.
The room runs as a 32-seat counter with a fermentation lab visible through glass behind the back bar. Time Out Bangkok's October 2024 opening report called the space 'closer to a working chef's pass than a cocktail bar', and the kit lined up across the back wall backs that read.
The list runs short and the bar runs it on its own terms. Order from the signatures.
Skip the off-list improvisations on a first visit. The published list is the room's editorial position; the bartenders built every serve to earn its place.
The crowd skews hospitality industry until 9pm and Thonglor regulars from 9pm to midnight. r/bangkok cocktail threads consistently flag the 8pm seating as the bar's best window for a conversation with the head bartender.