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How to Make Tea Concentrate: The Secret to Instant Lattes

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Ever wonder how coffee shops make Iced Tea Lattes so fast? They don't brew fresh every time. They use a "Tea Concentrate"—a hyper-strong elixir that acts just like espresso.

By keeping a bottle of this concentrate in your fridge, you are always 30 seconds away from a Masala Chai, a London Fog, or a fruity Iced Tea. This method uses the "Triple Strength" rule to ensure the flavor cuts through even the creamiest oat milk.

A glass bottle of dark amber tea concentrate next to a glass of iced milk.
Prep Time5 mins
Steep Time15 mins
Yields500ml (10 Cups)
Shelf Life2 Weeks

Ingredients

The Golden Ratio (1:15)
  • 30g Loose Leaf Tea (or 8-10 tea bags)
  • 500ml Water (Filtered is best)
  • Optional: Sugar or Honey (added while hot)

Best Teas for Concentrate:
  • Earl Grey: For London Fogs.
  • Masala Chai: For Iced Chai Lattes.
  • Thai Tea Mix: For orange Thai Iced Tea.
  • Hibiscus: For caffeine-free "fruit punch" soda.
Nutrition per 50ml shot (unsweetened):
Calories: ~5
Caffeine: ~40mg
Sugar: 0g
Fat: 0g

Instructions

1
Heat the Water: Boil your water. For Black/Herbal/Chai, use boiling (100°C). For Green/Jasmine, let it cool to 80°C to avoid bitterness.
2
The "Triple Strength" Steep: Combine water and tea in a heat-proof pitcher. Steep for 10 to 15 minutes. This is much longer than normal because we want a super-strong, tannic extraction that can stand up to milk and ice.
3
Sweeten (Optional): If you like sweet lattes, add your sugar or honey now while the liquid is hot. It will dissolve instantly, creating a syrup.
4
Strain & Store: Strain the leaves out completely. Pour the concentrate into a sterilized glass bottle (like a Hario bottle). Let it cool to room temperature, then refrigerate.
5
How to Serve: Fill a glass with ice. Pour 1 part Concentrate to 3 parts Milk (for Lattes) or Water (for Iced Tea). Stir and enjoy.

Why Does My Concentrate Get Cloudy?

This is called "Cream Down" (see our Tea Chemistry article). It happens when hot tea cools too slowly. To fix it, add a tiny pinch of baking soda to the hot brew, or just add a splash of boiling water to your cup before serving to clear it up instantly.