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Restaurant

Ku Bar

469 Thanon Phra Sumen, Khwaeng Wat Bowon Niwet, Khet Phra Nakhon, Krung Thep Maha Nakhon 10200, Thailand

Recommended by 57 people

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Find Ku Bar

469 Thanon Phra Sumen, Khwaeng Wat Bowon Niwet, Khet Phra Nakhon, Krung Thep Maha Nakhon 10200, Thailand

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+66 2 067 6731
HoursMonday: 7:00 PM – 12:00 AM Tuesday: 7:00 PM – 12:00 AM Wednesday: 7:00 PM – 12:00 AM Thursday: 7:00 PM – 12:00 AM Friday: 7:00 PM – 12:00 AM Saturday: 7:00 PM – 12:00 AM Sunday: 7:00 PM – 12:00 AM

*Opening hours may differ during holidays.

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About Ku Bar

Bangkok’s cocktail insiders pass around this shadowy Phra Nakhon hideaway for unconventional drinks built around bitterness and local teas. Past the derelict entrance and up to the third floor, a sliding wooden panel opens into a hushed, dimly lit sanctuary. The room breathes total *jai yen*—calm, stripped-back, and made for quiet conversation rather than party crowds. Behind the counter, bartenders work with quiet precision, leaning into the Mandarin concept of ku (bitterness) across an experimental list. Night owls return for the Dirty Fizz laced with the aroma of burnt corn husk, or a grilled pandan and hojicha serve layered with cold brew.

  • Bitterness-Driven Cocktails: Named after the Mandarin character for bitter, the menu spotlights savory, botanical, and tea-focused concoctions like charred pandan with hojicha and cacao-tinged bael.
  • Clandestine Alleyway Entry: Tucked up three flights in an unmarked, weathered building down a quiet alley, entry requires sliding back an unlabelled wooden partition.
  • Minimalist, Hushed Den: Low candlelight and vintage audio set a calm, reflective tone designed for one or two guests rather than noisy groups.
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What's On at Ku Bar

Upcoming events, special menus and other reasons to plan a visit.

No events or specials listed right now.

Why Guests Choose Ku Bar

A hidden third-floor sanctuary in Bangkok balancing bitter-forward mixology with hushed contemplation.

  • Bitterness-Driven Regional Cocktails

    Ku Bar crafts drinks around bitterness and regional botanicals like bael tea, hojicha, and charred pandan, departing from typical sweet bar formulas.

    every cocktail here incorporates some form of bitterness, which makes for a super unique menu

    Cynthia (Cynful Recommends)

  • Culinary Precision in Every Recipe

    Drink formulation is executed with fine-dining precision, calibrating glassware, temperature, and nuanced ingredient layers.

    Every detail, from the choice of glassware to the cocktail techniques, presentation, and temperature, is precisely mastered

    RTK

  • Thrilling Speakeasy Discovery

    Reaching the bar requires navigating an eerie unlit alley and an unassuming derelict building before finding the unmarked sliding door.

    I enjoyed the mystery of finding it, and the sort of sketchy way to enter, then up the stairs and you just have to guess the panel slides open

    tara ntula

  • Hidden Behind an Unmarked Sliding Door

    Tucked away on the third floor with zero exterior signage, the unmarked entrance filters out standard tourist traffic for true seclusion.

    It is a super hidden spot and easy to miss. It’s on the 3rd floor, behind a wooden sliding door, which makes it feel like a real secret bar.

    Luke Lee

  • Intimate Atmosphere for Quiet Contemplation

    The candlelit, minimalist room is deliberately arranged for quiet reflection and low-volume discussions rather than social mixer noise.

    This is a quiet bar for contemplation and hushed conversations, encouraged by a strong aesthetic, candlelight, and the crackle and hiss of vintage speakers.

    Kenneth Tay

  • Hideaway Detached from Urban Noise

    With no space allocated for groups, the venue offers an aesthetic sanctuary shielded from urban commotion.

    The bar to me was a hideaway from busy life and you find yourself end up here with your secret partner - have a fascinating cocktail 🍹 and great conversation.

    9emy L

Crafted drinks rooted in bitter notes, regional botanicals, and artisanal balance

  • Grilled Pandan

    Our fav of the night! Tasted chocolatey without being sweet, thanks to hojicha, cold brew, and charred pandan. Earthy, smoky, and really well-balanced.

    Cynthia (Cynful Recommends)

  • Dirty Fizz

    i was so excited to come and try the dirty fizz and it did not disappoint - simply one of the best drinks i’ve ever had.

    Christopher Taktak

  • Banana

    Strong banana flavour upfront, layered with the astringency of cacao bitters and bael tea. Slight tang from clarified Greek yoghurt kept things interesting—very complex, definitely not your typical banana cocktail

    Cynthia (Cynful Recommends)

  • Iribancha

    Refreshing in a very non-fruity way—think watermelon rind, not juice. Intense dark roasty notes from the Iribancha tea and a touch of creaminess from clarified milk, but not your usual milk punch at all.

    Cynthia (Cynful Recommends)

Beyond the menu

Thoughtful hospitality nuances and sensory details that elevate Ku Bar's clandestine atmosphere

  • Complimentary Water & Snack Service

    Cocktails arrive alongside complimentary water and a thoughtful small snack, with attentive staff quietly replenishing both without disrupting your evening.

  • Bespoke Bartender Flavor Pairings

    Bartenders offer personalized suggestions tailored to your palate, such as introducing drinks accented with the scent of burnt corn husk.

  • Vintage Acoustic & Candlelight Ambience

    The space is shaped for contemplation and conversation with candlelight and the ambient crackle and hiss of vintage speakers.

  • Precision-Calibrated Glassware & Temperature

    Fine-dining-level beverage craft where every technical parameter—from customized glassware to drink temperature—is calibrated for each recipe.

Before you head over

Essential planning guidance for navigating Ku Bar's clandestine entrance, seating, and bitter-led drinks

  • Navigating the Unmarked Entrance

    The venue is hidden at the end of an unlit alley in an older building with no exterior signage; head upstairs to the third floor and slide open the unmarked wooden panel to enter.

  • Group Size and Seating Policy

    The minimalist room is intentionally configured for quiet contemplation and private conversation, with no layout accommodations for groups and a per-person drink minimum.

  • Flavor Profile Expectations

    True to its name (苦, Mandarin for bitter), the cocktail menu centers on bitterness and roasty tea botanicals—such as cacao bitters, hojicha, and charred pandan—rather than sweet profiles.

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