
The Green Siren is officially joining the protein-maxxing movement.
Starbucks announced today that its cafes in the U.S. and Canada will permanently offer Protein Cold Foams, along with a line of Protein Lattes made with protein-boosted 2% milk, starting Sept. 29.
The chain says its new, macronutrient-packed drinks will come in a “variety of flavors,” including sugar-free and unsweetened choices, made with unflavored whey protein powder.
The Protein Cold Foam as a customization will add about 15 grams of protein to any cold beverage; iced drinks with Protein Cold Foam will offer approximately 19 to 26 grams of protein per grande drink; and Protein Lattes will deliver around 27 to 36 grams of protein per grande beverage.

Back in June, Starbucks confirmed to TODAY.com that it was testing a banana protein cold foam in five stores, so we can assume the trial went well.
The chain says Protein Cold Foams were the first “breakthrough innovation” built and tested through its Starting Five program which aims to modernize its menu.
At the time, the chain revealed that it would also be available in other flavors like chocolate in the future. Well, the future is now, and there are plenty more flavors to choose from — including pumpkin spice, which, by the way, returned on Aug. 25.
The coffee giant is following in the footsteps of other food companies who have been stuffing protein into everything from frozen pizza to ice cream, candy bars to lemonade, and water to popcorn.
Starbucks’ Protein Cold Foam Flavors
This creamy, frothy, protein-packed topping, which can be added to cold coffees, teas or Refreshers, will come in the following flavors:
- Banana (new)
- Vanilla
- Sugar-Free Vanilla
- Chocolate
- Matcha
- Salted Caramel
- Brown Sugar
- Plain
- Pumpkin (seasonal)
- Pecan (seasonal)
What’s in a Starbucks Protein Latte?
Starbucks says its Protein Latte, made with protein-boosted milk, will contain about 27 to 36 grams of protein per grande beverage. There will be a variety of flavors offered on the permanent menu starting Sept. 29.
How Protein Customization Works
Customers will be able to customize any beverage that has milk as part of its recipe, like lattes and shaken espressos, with protein-boosted 2% milk. Protein-boosted milk will add an extra 12 to 16 grams of protein per grande beverage.