Overview

• The beverages hit U.S. menus Sept. 29 with four featured Protein Lattes and several Protein Cold Foam drinks in flavors like banana, vanilla, chocolate and matcha.
• A grande can deliver up to about 36 grams of protein, while adding Protein Cold Foam to any cold coffee, iced tea or Refresher contributes roughly 15 grams.
• Baristas blend 2% milk with whey protein daily to make Protein-boosted milk, which can be substituted in any hot or iced drink that includes milk.
• Reported pricing is about $1 to swap in Protein-boosted milk and about $2 to add Protein Cold Foam, with amounts varying by store.
• Starbucks plans a ready-to-drink version of its protein-boosted milk for grocery and convenience stores in 2026.