MATCHAIced Matcha Latte with Oat Milk
The quick answer
Whisk 1 teaspoon of ceremonial matcha in 2 oz of 175 F water for 30 seconds until smooth. Fill a glass with ice, pour in 8 oz of oat milk, then add the matcha concentrate on top. Oat milk creates a creamier, naturally sweeter result than almond or soy milk without any dairy.
Oat milk became the default milk for iced matcha lattes for a good reason: its mild sweetness and creamy body make the whole drink taste more balanced without any extra sugar or flavoring.
Oat milk has about 3 grams of fat and 15-17 grams of carbohydrates per 8 oz serving, which gives it more body than almond milk and makes it cling to the matcha in a way that creates a genuinely creamy mouthfeel. Barista-edition oat milks (like Oatly Barista or Califia Barista Blend) have added fat and work especially well because they do not separate in the cold drink.
The natural sweetness of oat milk, around 7 grams of sugar per 8 oz from naturally occurring oat sugars, means most people need less added sweetener with oat milk than with other dairy-free options. If you are switching from almond milk to oat milk, start by tasting before adding any syrup. You may not need it at all.
Matcha and oat milk pair especially well because both have earthy, grain-forward flavor profiles. The oat flavor does not compete with the grassy, umami notes of matcha the way almond or coconut milk can. It amplifies the drink rather than muddying it.
For the best cold foam topping on an oat milk matcha latte, use barista-edition oat milk and froth it cold. Cold oat milk frothed with a handheld frother produces a thick, stable foam that sits on top of the drink for several minutes. This is the detail that makes the home version look and feel like a $7 cafe drink.
Dial it in before you make it
Dial in matcha, water, and milk for a smooth, un-bitter latte.
Matcha Ratio Calculator
| Ingredient | Amount |
|---|---|
| Matcha powder | 1.5 tsp (3 g) |
| Hot / warm water (to whisk) | 2 fl oz |
| Milk (or milk alternative) | 10 fl oz |
| Suggested sweetener (honey / syrup) | 1.5 tsp |
- 1. Sift matcha into a bowl or cup.
- 2. Add 2 fl oz warm water (~175°F / 80°C) and whisk in a W-motion until smooth.
- 3. Pour over ice, add your milk, and sweeten to taste.
1 tsp matcha ≈ 2 g. Standard ratio is 1 tsp per 8 oz of drink.
Make it
Makes 1 drink
Ingredients
Steps
We compared oat milk, almond milk, whole milk, and coconut milk side by side in iced matcha lattes. Oat milk consistently scored highest for creaminess and sweetness balance. It also produced the most stable cold foam for a layered presentation. It is the milk we now use by default for every cold matcha drink.
Pro tips
- Oatly Barista and Planet Oat Barista blend are the two best options for a creamy, foam-ready iced matcha latte.
- Shake the oat milk carton before pouring. Oat milk separates in the carton and an unshaken pour can taste watery.
- For cold foam on top, froth 2 oz of cold oat milk with a frother and spoon it over the finished drink.
- Chilled oat milk straight from the fridge makes the drink colder faster than room-temperature milk.
- If your oat milk matcha latte tastes too sweet, switch to an unsweetened oat milk variety.
Frequently asked questions
What is the best oat milk for matcha lattes?
Oatly Barista Edition is the top pick for both iced and hot matcha lattes. It has a higher fat content than regular oat milk, which gives it a creamier texture and better foam. Planet Oat Barista and Califia Oat Barista are solid alternatives available at most grocery stores.
Does oat milk change the flavor of matcha?
Slightly. Oat milk has a mild, grain-forward sweetness that complements the earthy, umami notes in matcha. Most people find it enhances the drink. If you want the matcha to come through cleanly without any milk flavor, use plain water and skip the milk entirely.
Is oat milk matcha latte vegan?
Yes, as long as you use a vegan sweetener like simple syrup, agave, or maple syrup. Honey is not considered vegan by most definitions. Matcha powder and oat milk are both plant-based, so the base drink is fully vegan.
How many calories is an oat milk matcha latte?
An iced matcha latte with 8 oz of plain oat milk and no sweetener has about 90-100 calories. Barista oat milk is slightly higher at 110-130 calories per 8 oz. Adding 1 tsp of simple syrup adds about 15 calories.
