Is it possible to dine at Portillo’s without adding on a slice of its fluffy, decadent chocolate cake for dessert? For more than 2 million customers, the answer is no — that’s how many slices of its signature dessert the local fast-food chain sells each year (and no, that doesn’t count the folks who just spring for a whole one). The cakes are baked fresh daily at every Portillo’s location, and fun fact: Each cake is covered in two pounds of chocolate frosting. $3.49/slice; $22.99/whole cake; multiple locations