Starbucks primarily uses dairy-based protein from milk and a custom ultra- filtered protein milk in its newer “protein” drinks, rather than a generic off-the-shelf whey tub you’d find at a supplement store. For add-ins, recent reports describe Starbucks using a proprietary high-protein milk and protein cold foam system that boosts protein by around 15–20 grams per drink, depending on size and recipe.

What Starbucks Protein Actually Is

Most of the protein at Starbucks still comes from milk (cow’s milk) in lattes, cappuccinos, and similar espresso drinks.

Newer “protein” beverages use an ultra-filtered, higher-protein milk base plus a protein-enriched cold foam that can bring a grande drink close to typical shake or chicken-breast levels of protein (around the mid-30 grams range).

Is It A Specific Brand Of Powder?

Public information points to Starbucks using a proprietary protein milk and integrated system, not a retail-brand scoop customers can buy off the shelf.

Coverage of these drinks focuses on “protein milk” and “protein cold foam” as internal Starbucks ingredients, and does not name a third‑party consumer brand.

Where The Protein In Your Drink Comes From

  • Standard lattes and mistos: protein from dairy milk (or soy milk if you choose it as an alternative).
  • New protein drinks: protein from ultra‑filtered dairy protein milk plus protein cold foam added on top.
  • Food items (egg bites, wraps, sandwiches, protein boxes): protein from eggs, dairy, meats, and nuts rather than a separate powder.

Quick Scoop For Your Post

If you’re writing about “what kind of protein does Starbucks use,” you can accurately say that Starbucks uses:

  • Dairy-based protein milk (ultra‑filtered, higher‑protein) for its new protein drinks.
  • Protein-enriched cold foam as an add‑on that can add ~15 g of protein to a drink.
  • Regular dairy or soy milk as the main protein source in classic drinks like lattes and mistos.

There is no confirmed, specific consumer protein powder brand publicly identified, only Starbucks’ own formulated protein milk and foam. Information gathered from public forums or data available on the internet and portrayed here.