Watermelon Orange Basil Cold Brew Oolong Tea
on Jul 31, 2026
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Sweetened watermelon cold brew oolong tea with orange and basil to round out the flavors. It’s perfectly sweet and so refreshing.

Cold Brew Oolong Tea
Oolong tea is in between a black tea and green tea and it’s so good cold brewed. I usually like to cold brew oolong tea with stone fruits like peach and apricot, but tried it with watermelon and loved how well they went together.
You can use any oolong tea you like. I used Iron Goddess of Mercy (also called Tie Guan Yin).
Note from Jee

I’ve tested cold brew tea with watermelon a few times and the secret ingredient to making it go from ok to WOW is sugar or honey to sweeten the drink.
I don’t sweeten other cold brew teas, but with watermelon, it makes such a huge difference. For this recipe, I used honey but you can use the same amount of sugar.
My Cold Brew Tea Formula
This drink is made using my cold brew tea formula of tea + 1 fruit + 1 citrus + 1 herb. Oolong tea is my tea, Watermelon is my fruit, mandarin orange is my citrus, and basil is my herb. I added honey to sweeten.
Recipe Notes
Any sweetener can be used.
I made this with honey but you can use the same amount of sugar, date syrup, monk fruit, or maple syrup.
Use filtered water.
Better water means better tasting tea so I always use filtered water to make drinks.
Don’t leave the tea and fruits in the cold brew tea for more than 24 hours.
Make sure to strain out the solids from the liquid since leaving solids in the cold brew tea can accelerate bacterial growth. The cold brewed tea can be stored in the refrigerator, in an airtight container for 2 more days.
Glass Containers I Use

Related
- Watermelon Cold Brew Black Tea
- Grape Lemon Chamomile Cold Brew White Tea
- Spicy Pineapple Lemon Mint Cold Brew Tea
- Strawberry Basil Cold Brew Tea
- Raspberry Mint Cold Brew Green Tea
If you tried this Watermelon Orange Basil Cold Brew Oolong Tea recipe, please leave a ⭐⭐⭐⭐⭐ star rating and let me know how you like it in the comments below.

Watermelon Orange Basil Cold Brew Oolong Tea
Ingredients
- 1 ½ tablespoons oolong tea, (or 3 tea bags)
- 1 ½ cups watermelon, chopped
- ½ mandarin orange, peeled and chopped
- 3 basil leaves, torn
- 1 tablespoon honey
- 3 cups water, cold or room temperature
Instructions
- Put tea, watermelon, orange, and basil into a glass container. Mash with a muddler.
- Add honey and water.Stir or shake to make sure all the ingredients are touching the water.
- Cover and refrigerate for 12 hours.
- Use a strainer to remove all solids.The solids should not be left in the liquid more than 24 hours.
- Serve with or without ice.This cold brew tea can be stored in the refrigerator for up to 2 more days.
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.












