Learn how to make the perfect iced matcha latte at home with one essential trick. Better than Starbucks, ready in 5 minutes, and endlessly customisable.
Iced Matcha Latte: The Only Recipe You Need
There's a reason iced matcha lattes have taken over every café menu, the combination of grassy, slightly sweet matcha against cold creamy milk is genuinely addictive. The good news? The homemade version is better than anything you'll queue for at Starbucks, costs a fraction of the price, and takes all of five minutes.
The secret comes down to one non-negotiable step: make a hot matcha concentrate first. Skip this, and you'll be fishing green clumps out of your glass with a straw.
Why a Hot Concentrate Matters
Matcha is a fine stone-ground powder. Unlike instant coffee, it doesn't dissolve, it suspends in liquid. Cold water simply can't break up those microscopic particles effectively. By whisking your matcha into a small amount of hot water first, you create a smooth, vivid green concentrate that disperses perfectly the moment it hits cold milk and ice. This is the same method baristas use, and it's the single biggest upgrade you can make at home.
Ingredients
- 2g matcha powder (roughly 1 tsp), ceremonial or premium culinary grade
- 60ml hot water (about ¼ cup), 70–80°C, not boiling
- 200ml cold milk (about ¾ cup + 1 tbsp), any variety you like
- Sweetener of choice (optional), 1–2 tsp honey, maple syrup, or agave
- Handful of ice cubes
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Equipment
- Fine mesh sieve or tea strainer
- Matcha whisk (chasen), small hand frother, or a regular small whisk
- Tall glass (350ml / 12oz or larger)
Instructions
Step 1: Sift the matcha
Sift 2g of matcha through a fine mesh sieve into a small bowl or mug. This breaks up any clumps before they become a problem. Don't skip this, even high-quality matcha clumps during storage.
Step 2: Make the concentrate
Pour 60ml of hot water (70–80°C) over the sifted matcha. If you're using honey or another sweetener, add it now, warmth helps it integrate fully. Whisk vigorously in a W or M motion for 15–20 seconds until the mixture is smooth and slightly frothy with no visible lumps.
Tip: If you don't own a chasen, a small electric milk frother works brilliantly. Hold it at a slight angle and pulse for 10 seconds.
Step 3: Build the drink
Fill a tall glass with ice. Pour in your cold milk. Slowly pour the matcha concentrate over the top. Give it a gentle stir, or leave it layered for that café-worthy look.
Step 4: Enjoy immediately
Iced matcha is best fresh. The longer it sits, the more the powder settles to the bottom.
Starbucks Iced Matcha Latte Dupe
Starbucks uses a pre-sweetened matcha blend with added sugar. To replicate it closely at home, whisk 1½ tsp of vanilla syrup into your hot concentrate along with the matcha. Use semi-skimmed milk and plenty of ice. You'll get a nearly identical drink at roughly a tenth of the cost, without the queue.
Best Milks for Iced Matcha
| Milk | Flavour Notes | Creaminess |
|---|---|---|
| Oat milk (e.g. Oatly Barista) | Naturally sweet, smooth | ★★★★★ |
| Whole milk | Classic, rich | ★★★★★ |
| Semi-skimmed | Lighter, neutral | ★★★☆☆ |
| Almond milk | Nutty, thinner | ★★☆☆☆ |
| Coconut milk | Tropical, creamy | ★★★★☆ |
Oat milk is the standout favourite for cold matcha lattes, its natural sweetness complements matcha's vegetal character perfectly, and it froths well if you want a foamy top layer.
Frequently Asked Questions
How do you stop iced matcha clumping?
Two steps make all the difference: sift your matcha through a fine mesh sieve before whisking, then whisk it with a small amount of hot water (60ml at 70–80°C) before adding cold milk. Cold liquid alone cannot properly break up the fine particles, which is why clumps form. A small electric frother also helps if you don't have a traditional bamboo whisk.
What milk is best for iced matcha?
Oat milk, particularly barista editions, is widely considered the best pairing. It has a natural sweetness and creamy body that balances matcha's slight bitterness without overpowering it. Whole dairy milk is also excellent. Thinner milks like almond or rice tend to produce a less satisfying drink unless you specifically prefer a lighter result.
Can you dissolve matcha in cold water?
Technically, matcha doesn't dissolve in any temperature of water, it suspends. That said, cold water makes it significantly harder to achieve a smooth suspension. You'll almost always end up with lumps and a gritty texture. The hot-concentrate method (using just 60ml of warm water) solves this entirely while still giving you an ice-cold final drink.
How many calories are in an iced matcha latte?
The matcha itself is negligible, roughly 3 calories per gram. Your total depends entirely on the milk and sweetener:
- With whole milk and no sweetener: approximately 130 kcal
- With oat milk (Oatly Barista) and no sweetener: approximately 100 kcal
- With semi-skimmed milk and 1 tsp honey: approximately 110 kcal
For comparison, a Starbucks grande iced matcha latte contains around 200 kcal, largely because of the added sugar in their matcha blend.
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