Starbucks is facing a consumer lawsuit over claims that the protein drinks labeled “sugar-free” on its cafe menus may actually contain more sugar than a Reese’s peanut butter cup. The federal lawsuit filed late Friday in Seattle alleges that eight protein beverages Starbucks sells in the U.S. contain varying amounts of sugar even though the company lists them as sugarless. On Monday, the menu on Starbucks' U.S. website listed a 16-ounce (0.5-liter) Sugar-Free Caramel Protein Matcha with 16 grams of sugar and a 20-ounce (0.6-liter) version of the same drink with 21 grams of sugar. By comparison, one Reese’s cup has 11 grams of sugar. Hagens Berman, a law firm that specializes in class action cases, filed the suit on behalf of three individual consumers who bought Starbucks’ sugar-free protein drinks in California, New York and Washington. “Consumers avoid sugar for various reasons, whether that be general health, diabetes and blood glucose levels or other factors, and for many, a staunch mislabeling like this is significant,” said Steve Berman, a co-founder and managing part