LATTESOat Milk Latte
The quick answer
An oat milk latte uses 2 oz of espresso or moka pot coffee and 6 oz of barista-formula oat milk at a 1:3 ratio. Use barista oat milk (like Oatly Barista or Califia Barista) for the best frothing results -- regular oat milk separates under heat. No espresso machine needed; a moka pot works great.
Oat milk is now the most popular dairy-free milk at coffee shops in the US, and the barista formula froths almost as well as whole milk -- if you buy the right kind.
Barista oat milk is the key distinction here. Regular oat milk separates when heated and foams poorly. Barista formula oat milk (Oatly Barista, Califia Farms Barista, Planet Oat Barista) contains added stabilizers and a slightly higher fat content that allows it to froth and steam without breaking. Always check the label before buying.
The natural sweetness of oat milk changes how much syrup you need. Oat milk has a mild, grain-sweet flavor that reads sweeter than dairy milk, especially in a latte. If you're making a flavored oat milk latte, start with 1 tablespoon of syrup and taste before adding more -- you may not need the second tablespoon you'd normally add.
Frothing barista oat milk takes about 30-45 seconds with a handheld frother, slightly longer than whole milk. The foam won't be quite as thick or stiff, but it's genuinely close. Heat the oat milk to 140-150 degrees F before frothing -- the same as dairy milk. Don't boil it or the foam will collapse and the milk will taste starchy.
An iced oat milk latte is one of the simplest drinks on this list. Skip heating, pour your espresso over ice, then add cold barista oat milk. The natural oat sweetness shines cold, making this a particularly satisfying iced drink without any syrup needed. It's also one of the best options for people avoiding both dairy and added sugar.
Dial it in before you make it
Match your espresso dose and yield before you pull the shot.
Espresso Ratio Calculator
| Measurement | Value |
|---|---|
| Dose (in) | 18 g |
| Ratio | 1:2 |
| Yield (out) | 36 g |
| Yield (fl oz ref.) | 1.2 fl oz |
| Shot time guide | Aim 25–32 seconds |
fl oz reference uses 30 g per fl oz (espresso is denser than water). Dial in grind size to hit your target yield in 25–32 s.
Make it
Makes 1 drink
Ingredients
Steps
We've tested Oatly Barista, Califia Barista, Planet Oat Barista, and Silk Oat milk side by side in lattes. Oatly Barista produced the thickest foam and the most neutral flavor. Califia Barista was a close second with a slightly creamier mouthfeel. Both beat every non-barista oat milk we tried by a significant margin.
Pro tips
- Always buy barista-formula oat milk -- regular oat milk separates when heated and foams poorly.
- Oat milk tastes sweeter than dairy milk, so reduce syrup by half compared to a regular latte.
- Don't boil oat milk -- it turns starchy and the foam collapses. Pull off heat at the first wisps of steam.
- For an iced oat milk latte, use cold barista oat milk straight from the fridge -- no heating needed.
- Oatly Barista in a blue carton is the most widely available barista oat milk at US grocery stores.
Frequently asked questions
What is the best oat milk for lattes?
Barista-formula oat milk is the only type worth using for steamed lattes. Oatly Barista, Califia Farms Barista, and Planet Oat Barista are the top three options in the US. They all contain stabilizers that prevent separation under heat and allow the milk to froth properly. Regular oat milk separates and produces very poor foam.
Does oat milk froth as well as dairy milk?
Barista oat milk froths surprisingly well -- about 80-85% as well as whole dairy milk. It produces creamy, stable foam that holds for several minutes. The texture is slightly lighter and less stiff than whole milk foam. For handheld frother use, the difference is minimal and most people can't tell in a finished latte.
Is an oat milk latte healthier than a regular latte?
It depends on your goals. Oat milk has no saturated fat and is often lower in calories than whole milk. A 6 oz serving of Oatly Barista has about 90 calories versus 110 for whole milk. However, oat milk has more carbohydrates and added sugar than unsweetened dairy milk, which matters for some diets.
Why does my oat milk latte taste watery?
You're likely using regular oat milk instead of barista formula, or you're using too much milk. Barista oat milk has a creamier, fuller body. Also check your coffee-to-milk ratio -- you want 2 oz of strong concentrate to 6 oz of milk. Weak coffee gets lost in any type of milk.
Can I make an oat milk latte without an espresso machine?
Yes. A moka pot or AeroPress gives you a strong enough concentrate to pair with 6 oz of oat milk. Brew 2 oz of concentrate using either method, then follow the same steps as any other latte. The mild, naturally sweet flavor of oat milk complements moka pot coffee particularly well.
