Want to blow a dieter's mind? Convince them — correctly — that cotton candy is a sensible dessert: No fat, easy to savor, only 110 calories a stick. Those are the justifications you'll make when you find yourself driving to the deep Eastside suburbs to stock up on California Snack Foods' phenomenal cotton candy. (I have a dozen bags in my pantry right now.) While you're at the warehouse in El Monte, pick up a pre-order of daily-made caramel apples, as big as a fist and a steal at two dozen for $18. If popcorn's your thing, select from 10 flavors — ranging from cinnamon to jalapeño and cheese — both premade and ready-to-be-popped. Ambitious DIY party throwers can rent an old-school popcorn machine, snowcone shaver or even a cotton-candy spinner. Maybe your skinny friend won't eat a slice of cake, but she can't say no to a low-cal froth of watermelon, piña colada or sour apple spun sugar.