Knock Knock is one of Da'an's newer hits, a two-floor cocktail bar on Section 4 of Xinyi Road run by the real-life partners Kevin Lo and Emma Tai. The name comes from the classic joke, and it sets the tone for the whole visit.
The greeting is the gimmick that works. Bartenders kick off each drink by playfully knocking on the bar before they start to build, an opening exchange that turns the order into a small back-and-forth.
The two floors split the experience. The ground level pairs hearty plates with easy, low-ABV drinks, while the upstairs room is where the more elevated mixology and fried snacks take over.
The cocktails blend East and West. The team leans on contrasting influences, building drinks that read as local and international at once rather than picking a single lane.
Signature builds show that range. Reviewers point to a "Cuiyu and Lemon Tart" that works a Taiwanese tea into a dessert frame, and a clear mango cocktail that keeps a tropical note clean and bright.
The mood stays warm and social rather than hushed. This is a bar built for conversation and a few rounds, with the interactive welcome keeping things light from the first drink.
Who would love it: drinkers who want strong cocktails with a sense of fun and a kitchen to match. Who would skip it: anyone after a silent, formal tasting room, because the energy here is playful by design.
Doors open at 7pm from Tuesday through Sunday and run until 2am. The Da'an address sits within easy reach of the district's other counters, so it slots neatly into a wider night out.
The Section 4 Xinyi Road location keeps Knock Knock inside Da'an's busy run of bars and kitchens, an area where a guest can string together several rooms in a single night. The two-floor layout means the bar can hold a long visit on its own, with the mood shifting as guests move upstairs.
The ground-floor and upstairs split is the smart move that makes the bar work for more than one mood. An early, food-led start downstairs can roll into a more focused cocktail session above, so the same address suits both a casual dinner drink and a serious nightcap.
The partnership behind the bar shows in the hospitality. Kevin Lo and Emma Tai run the room with a personal touch, and the knocking welcome is less a gimmick than a sign of how much the team leans into making guests feel hosted.
The East-West blend gives the menu its identity. Drinks like the tea-led "Cuiyu and Lemon Tart" sit next to cleaner, tropical builds, and the range lets the bar swing from playful to precise without losing its through-line.
The kitchen is part of the pitch rather than an afterthought. Fried snacks upstairs and heartier plates downstairs mean the drinks have something to lean on, which keeps the bar working for a full evening rather than a single round.
For a first visit, start downstairs with a low-ABV drink and a plate, then head up for the signature cocktails once the night settles in. A booking is worth making, since the room has built a following fast and fills on weekends.
For more in the city, see the guide to the best bars in Taipei, the best cocktail bars in Taipei, and the best date night bars in Taipei. It sits among the wider field of the best cocktail bars in Asia, alongside Da'an neighbours like To Infinity and Beyond in Taipei and Draftland in Taipei.
Sources: Time Out · Food For Thought Taipei bar guide · Knock Knock on Facebook. Editorially curated by Marcus Webb.
