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Wintermelon Tea Recipe: The Sweet Gourd Drink (Bubble Tea Classic)

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It’s a staple on every Bubble Tea menu, yet it confuses beginners every time. "Is it melon? Is it fruit?" Surprisingly, Wintermelon Tea is made from a vegetable: the Ash Gourd.

Despite its humble origins, when slow-cooked with brown sugar, this mild vegetable transforms into something magical. It develops a rich, caramel-like flavor with hints of vanilla and roasted grain. It is naturally caffeine-free and famous in Taiwan as a cooling drink for hot humid days.

A glass of dark amber wintermelon tea with ice cubes.
Prep Time15 mins
Cook Time1.5 hrs
Servings10 Cups
CaffeineZero

Ingredients

The Wintermelon Syrup
  • 1.5 kg Fresh Winter Melon (Look for "Ash Gourd" in Asian grocers)
  • 250g Brown Sugar (Dark muscovado gives best flavor)
  • 50g Rock Sugar (Adds a cleaner sweetness)

To Serve
  • Water (to dilute)
  • Plenty of Ice
  • Optional: Lemon Slice or Grass Jelly cubes
Nutrition per serving (diluted):
Calories: 110
Fat: 0g
Sugar: 28g
Protein: 0g

Instructions

1
Prep the Melon: Wash the skin thoroughly. Peel the green skin off and remove the seeds/pith from the center. Cut the white flesh into small 2cm cubes.
2
The Sugar Soak: Place the melon cubes in a large pot. Pour the brown sugar over them. Stir to coat. Let it sit for 1 hour. This is crucial: the sugar draws the water out of the melon, creating its own liquid without adding water.
3
Slow Simmer: Add the rock sugar to the pot. Bring the mixture to a boil, then reduce heat to low. Cover and simmer for 1.5 to 2 hours. The melon will turn translucent and brown, and the liquid will become a thick, dark syrup.
4
Strain: Strain the liquid through a fine mesh sieve or cheesecloth. Press down on the melon pulp to extract every drop of syrup. Discard the pulp.
5
Serve: To drink, mix 1 part Wintermelon Syrup with 3 parts water (or to taste). Serve over plenty of ice.

Expert Tip: Why "Winter" Melon?

Despite being a summer drink, it is called Winter Melon because the mature gourd develops a waxy, white coating that looks like frost. This coating allows the vegetable to be stored for months throughout the winter without rotting.