Bar Trench sits in Ebisu-Nishi, the quiet, village-like grid of lanes west of the station that gives Ebisu its relaxed character — a small, easy-to-miss room with a reputation among Tokyo's serious cocktail drinkers. The bar specialises in absinthe and herbal liqueurs, with a menu built around bitters, infusions, and classic techniques rather than spectacle.
It has the in-the-know, low-key feel typical of the streets around it: no sign shouting for attention, just a door you need to already know about. A good example of why Ebisu rewards walking its backstreets rather than sticking to the main road from the station.