Starbucks is testing a new protein-packed cold foam that adds 15g of protein to any drink—yes, even your wildest custom orders. People are buzzing, calling it the biggest Starbucks innovation since the Pumpkin Spice Latte. Early testers tried a banana protein foam on a sugar-free vanilla latte, but you can add it to anything. Only five stores have it for now, but if it’s a hit, it could go nationwide. Would you try protein foam on your fave Starbucks drink? #Starbucks #ProteinFoam #CoffeeInnovation #Food