If a player has no suitable topping cards in their hand, that player must say “pass” on their turn. Their turn is then skipped until the pizza is completed.
Players can also say “pass” on their turn even when they still have suitable topping cards in their hand. But once a player has “passed”, they are no longer allowed to play on the current pizza.
When all players have passed except for one, the final remaining player has “completed” the pizza. That player must move the pizza base and all of its toppings to the side then draw a new pizza base for all players to place toppings onto once more. As a reward for completing the pizza, that same player gets the first turn at playing a topping onto the new pizza base. After this, turns continue as they did for the first pizza.
Note: If the stack of pizza bases runs out, collect up all the used pizza base cards, shuffle them, and replace the stack.