Born from a shortage.
Brewed with Thai pride.

How it happened

Gauzy earned her PhD in Amsterdam and made Thailand her home. An avid gin & tonic enthusiast, she always sought out the finest imported tonics — never imagining she'd one day craft her own.

When Covid-19 hit in 2020, global supply chains collapsed and imported tonic water vanished from Bangkok's shelves. The shortage sparked a realisation: Thailand — a country overflowing with extraordinary herbs and botanicals — had no local tonic water brand at all.

Gauzy brought her scientific background to bear, partnering with Kasetsart University to develop formulas rooted in Thai botanical heritage — Pegha, cardamom, organic citrus, and real quinine. Bitter Water launched in 2020, and has been growing ever since.

Industrial food processing or manufacturing facility with stainless steel equipment, conveyor belts, and workers wearing hairnets and protective clothing.
A woman with long dark hair and sunglasses smiling while steering a boat on a canal, with buildings and trees in the background.
A man wearing a white lab coat and face mask is standing at a kitchen counter, holding a jar of fermented ingredients, with several jars of fermented items in front of him, in a clinical kitchen setting.

A scientist, a shortage, and a gap in the market.

  • Before - Gauzy earns her PhD in Amsterdam - a gin & tonic enthusiast who calls Bangkok home

  • 2020 - Covid-19 empties the tonic aisle - and reveals that Thailand has no homegrown tonic brand

  • 2020 - Research with Kasetsart University begins - Bitter Water is developed and launched

  • Now- Three flavors. Stocked at Michelin restaurants, 5-star hotels, and gourmet stores across Thailand

A menu titled 'Soft Drinks' on a table with a glass of water, a bowl of mixed nuts, and a metal pot. The menu lists various drinks including Jun Kombucha, Bloom Berry Fizz, Passion Oolong Fizz, Defender - Tropical Ginger Beer, Fever-Tree Indian Tonic, and others.

"Thailand has some of the world's most remarkable herbs. Why were we pouring imported tonic over them?"

— Gauze, Founder · Bitter Water Limited

MEET The Founder

A woman with dark hair smiling and holding a black basalt grinder in a commercial kitchen.

Pitipon Kitirattarkarn (Gauzy)

Founder · Bitter Water Limited · Est. 2020

A PhD graduate from Amsterdam with a lifelong love of gin & tonic, Gauzy turned a pandemic-era shortage into Thailand's first homegrown craft tonic brand. Working alongside Kasetsart University, she developed three botanically distinct formulas that celebrate Thailand's extraordinary natural heritage and prove that the best tonic was always growing here.

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