Nam Anchan
น้ำอัญชัน
Nam Anchan is butterfly pea flower tea — a stunning deep indigo-blue herbal drink made from butterfly pea blossoms that turns vibrant purple when lime juice is added, naturally caffeine-free and mildly earthy.
Cultural Origin
Nam Anchan is a Thai herbal drink made from butterfly pea flowers (Clitoria ternatea), traditionally consumed for its vivid blue color and cooling properties. The drink is rooted in Thai folk medicine and remains popular at health-oriented cafes and traditional dessert shops, often served with a squeeze of lime that shifts the color to purple.
Key Ingredients
- butterfly pea flowers
- water
- honey or sugar
- lime juice
Taste profile
- Salty
- fish sauce, soy, shrimp paste
- Sweet
- palm sugar, coconut
- Sour
- lime, tamarind, fermentation
- Umami
- dried shrimp, fermented pastes, stock
Mild and faintly floral on its own, almost more about colour and aroma than a strong taste; a squeeze of lime adds a sharp sourness that shifts both the colour and the flavour towards tart.
How Nam Anchan Is Made
- 1
Steeping
Dried or fresh butterfly pea flowers are steeped in hot water, releasing a deep blue colour.
- 2
Straining
The spent flowers are strained out, leaving a clear indigo liquid.
- 3
Sweetening
Honey or sugar is stirred in while the liquid is still warm.
- 4
Serving
The tea is poured over ice, with a wedge of lime served on the side or squeezed in at the table to shift the colour toward violet-pink.
When It’s Eaten
Ordered as a refreshing, caffeine-free option any time of day, common at health-focused cafés and spas rather than street-food stalls.
How to Order It
- น้ำอัญชันมะนาว
- nam anchan manao
- butterfly pea tea with lime
- ไม่ใส่น้ำผึ้ง
- mai sai nam phueng
- no honey
What people get wrong
Adding the lime too early and pouring it out before noticing the colour change; the dramatic shift from blue to purple is meant to happen at the table.
Where to Try It
Thai health cafés, spas, hotel restaurants, and traditional herbal drink vendors.
Tips
- Add the lime separately at the table to watch the dramatic colour change from deep blue to violet-pink — a small piece of Thai food theatre.