A small size cafe latte at Starbucks contains 190 calories, 17 grams of sugar and 150 mg of caffeine. A small white chocolate mocha Frappuccino has 38 grams of sugar, and only a tiny portion of it comes from milk. Also, be honest, do you really get a small-size of anything at a coffee shop? You’re better off sticking to regular coffee with (steamed) milk.