Starbucks uses Oatly Barista Edition oat milk, and since November 7, 2024 it costs you nothing extra. That has been the standard in US stores since March 2021.
Not every store, though. Some pour a different brand when Oatly supply runs short, which is why your latte occasionally tastes off for a week and you think you imagined it.
Below: the brand, the exceptions, a way to check it yourself from Starbucks’ own ingredient list, and the numbers on all three oatmilk drinks currently on the US menu.
What brand of oat milk does Starbucks use?
Oatly Barista Edition. Starbucks rolled it out to US stores nationwide on March 2, 2021 after testing it in the Midwest, and it has been the default ever since.
That is the answer for a company-operated store in the US. It is not a guarantee about the specific store you are standing in.
| What’s in the fridge | Where | Why |
|---|---|---|
| Oatly Barista Edition | Most US company-operated stores | The national standard since 2021 |
| A substitute brand | Any store, for a week or two | Supply gaps. Baristas report swaps often enough that it is worth knowing about |
| Whatever the licensee buys | Licensed stores in grocery chains, airports, hotels, campuses | They order their own stock and set their own menu |
| Something else entirely | Outside the US | Canada, the UK and other markets run separate supply deals |
If it matters to you, ask to see the carton. It is a normal request, the carton is right there on the bar, and a barista would rather show you than argue about it.
- Matches the oatmilk on Starbucks' own ingredient statement line for line
- Added canola oil gives foam that holds and does not split in hot espresso
- Certified gluten-free, with no cane sugar or sweetener added
Check it yourself on Starbucks’ ingredient list
You do not have to take anyone’s word for this. Starbucks publishes the full ingredient statement for every drink, and the oatmilk gets its own bracketed list inside it.
Here it is against the Oatly Barista Edition carton:
| Part of the list | Starbucks’ oatmilk | Oatly Barista Edition |
|---|---|---|
| Base | Oatmilk (water, oats) | Oat base (water, oats) |
| Oil | Canola oil | Low erucic acid rapeseed oil |
| Minerals, 2% or less | Dipotassium phosphate, calcium carbonate, tricalcium phosphate, sea salt, dicalcium phosphate | The same five, in the same order |
| Vitamins | Riboflavin, vitamin A, vitamin D2, vitamin B12 | Riboflavin, vitamin A acetate, vitamin D2, vitamin B12 |
Canola oil and low erucic acid rapeseed oil are the same oil under two labelling conventions. Canola is the North American name.
Ingredient lists run in descending order by weight, so two that match line for line are the same formula. Every oatmilk drink on the US menu carries that identical bracketed list, which is a useful thing to check the next time someone tells you their store switched.
Starbucks ingredient and nutrition pages checked September 19, 2026.
Does Starbucks charge extra for oat milk?
No. Not since November 7, 2024, at company-operated stores in the US and Canada.
Starbucks dropped the non-dairy surcharge on all four of its plant milks: oatmilk, almondmilk, soymilk and coconutmilk. Swapping any of them into any drink is now a free customization.
One exception. Licensed stores set their own pricing, so the kiosk in an airport or a grocery store can still add a charge. Pricing checked September 2026.
Which Starbucks drinks are made with oatmilk?
Three, as of September 2026. Everything else on the menu is a substitution you ask for.
| Drink | Size listed | Calories | Sugar | Caffeine |
|---|---|---|---|---|
| Iced Brown Sugar Oatmilk Shaken Espresso | Grande, 16 fl oz | 150 | 15 g | 255 mg |
| Iced Hazelnut Oatmilk Shaken Espresso | Grande, 16 fl oz | 150 | 16 g | 255 mg |
| Brown Sugar Oatmilk Cortado | Short, 8 fl oz | 130 | 14 g | 230 mg |
All three land at 1 to 2 g of protein.
The cortado is worth a second look. It is an 8 oz cup built on three ristretto shots of Blonde espresso, so it carries 230 mg of caffeine in half the volume of the shaken espressos.
That is a lot in a small cup, and it is easy to order two. If you track this, here is which Starbucks drinks carry the most caffeine.
Seasonal lattes rotate on and off the menu constantly. The three above are the ones built on oatmilk by default rather than by request.
Starbucks oat milk nutrition
The numbers below are Oatly Barista Edition off the carton, not a finished drink.
| Per 1 cup (8 fl oz) | Oatly Barista Edition |
|---|---|
| Calories | 140 |
| Total fat | 7 g |
| Total carbohydrates | 16 g |
| Sugars | 7 g |
| Protein | 3 g |
| Calcium | 350 mg (25% DV) |
Here is the trade-off nobody puts in a headline. A grande Caffè Latte on 2% milk is 190 calories and 13 g of protein. Oat milk brings the calories down and takes most of the protein with it, because oats are a starch, not a protein source.
If you are drinking a latte for the protein, oat milk is the wrong choice and creaminess does not fix it. If you are drinking it because dairy does not agree with you, the protein was never the point.
For the opposite end of the scale, breve uses half-and-half instead.
Is Starbucks oat milk sweetened?
No sweetener goes into it, and the label still reports 7 g of sugars. Both of those are true at once, which is why this question keeps coming back.
Look at the ingredient list again. Water, oats, canola oil, minerals, vitamins. No cane sugar, no syrup, nothing sweet. The sugars are made from the oats themselves: enzymes break the oat starch down during production and what comes out is maltose. That is also why oat milk tastes faintly sweet on its own and almond milk does not.
Here is where every other page on this question gets tangled. Those 7 g sit on the panel under added sugars, which is an FDA labelling term with a specific definition and does not mean “sweetened”. Nothing sweet was added. The sugar was made from the oats during processing, and that is the line on the label it lands on.
The sugar you actually taste is the syrup. A grande Iced Brown Sugar Oatmilk Shaken Espresso carries 15 g, and the brown sugar syrup does most of that work. Order a plain latte with oatmilk and you skip it entirely.
Is Starbucks oat milk gluten free?
Oatly Barista Edition is certified gluten-free. Oats contain no gluten themselves, but they are routinely grown and milled alongside wheat, so the testing is what matters rather than the grain. Anything labelled gluten-free in the US has to come in under 20 ppm, oats included.
Then there is the part that gets left out everywhere else.
Starbucks prints the same line on every drink page: they cannot guarantee anything served in the café is allergen-free, because the same equipment prepares everything. One steam wand, one set of pitchers, every milk in the store through both.
Certified carton, shared bar. If you are avoiding gluten by preference, the oatmilk is fine. If you have celiac disease, the certification on the carton is not the fact that decides it for you.
Why Barista Edition and not regular Oatly?
The canola oil. Regular Oatly has less fat in it, and fat is what gives steamed milk a stable foam and stops it splitting when it hits hot espresso. Barista Edition exists because plain oat milk curdles in a flat white and falls flat in a cappuccino.
Straight up, so you know what this page is built from: I froth my milk at home in an Aeroccino 3, not behind a Starbucks bar, and I am not in the US. Everything above about the menu, the stores and the pricing comes from Starbucks’ own ingredient and nutrition pages and their published announcements, checked in September 2026.
Copying the drink at home, the milk is the easy half. You can pull the espresso at home without buying a machine, and the difference between a flat white and a cappuccino comes down to how far you stretch the milk. Barista Edition handles both.
Frequently asked questions
What oat milk does Starbucks use in 2026?
Oatly Barista Edition, same as it has been since 2021. Starbucks has not announced a change. The oatmilk ingredient statement on their own menu pages still matches the Oatly Barista formula line for line, checked September 2026.
Is it the Barista Edition or regular Oatly?
Barista Edition. The higher fat content is the whole reason cafés use it, and the ingredient list Starbucks publishes includes the canola oil that only the Barista formula has.
Can I buy the same oat milk Starbucks uses?
Yes. Oatly Barista Edition sells in most US supermarkets and online, in 32 oz shelf-stable cartons and 64 oz chilled. It is the same product, not a foodservice-only version.
Is Starbucks oat milk healthy?
It is 140 calories and 3 g of protein per cup, with added calcium and vitamins. Reasonable as a milk swap, weak as a protein source. The health question in a Starbucks cup is almost always the syrup rather than the milk.
Does Starbucks still charge for oat milk?
Not at company-operated stores in the US or Canada. The surcharge came off on November 7, 2024. Licensed stores set their own prices and some still charge.
What oat milk does Starbucks use in Canada and the UK?
Different suppliers, and they change independently of the US. Everything on this page is the US answer. If you are outside the US, ask in store, because the carton behind the bar is the only reliable source.
The short version
Oatly Barista Edition, free to swap in since November 2024, and you can verify it yourself against Starbucks’ own ingredient list in about thirty seconds.
If you want it at home, buy the same carton. It is the one thing about a Starbucks drink you can reproduce exactly.
