As it was with the soup Nazi on the classic Seinfeld episode, there’s a routine that, if not followed correctly, irritates both customers and proprietors. Order the size first, then the toppings (which actually go on the bottom) and finally the ice flavorings. When I arrive, a mom and dad are there with their two children. Still unprepared, they smile and let me go first. Inside are two guys working an electric ice shaver. “Small, haupia, pineapple,” I say quickly.