Burgermaster is one of Bill Gates’ favorite fast-food restaurants, so it’s consistently disappointing every time we show up at their Bellevue location and he isn’t there. But one sip of a 16-ounce minty cookies and cream milkshake makes us feel much better that the second richest man on the planet is probably off saving the world instead of eating cheeseburgers in a parking lot. This artificially-flavored green mint shake is frosty, thick, and blended with nearly an entire sleeve of Oreos. It’s Burgermaster’s greatest contribution to the world. That is, aside from their flawless panko-crusted onion rings.