Fizzo is a drink that customers can order in Papa's Theateria. It is unlocked from the start. The badge Whizz Fizz is earned when you serve 30 orders with Fizzo.
Fizzo is also a standard drink that customers can order in Papa's Brownie Mia!. The drink is unlocked from the start of the game.
Fizzo is a standard drink you can get in Papa's Parkeria. It is a starting ingredient.