Given you're in a beta co-op game that you are not the host, When you cook food in the host's house, And the ingredients needed for the recipe are in the fridge, Then you are able to cook the food without using the ingredients. Result: This allows you to cook infinite amounts of food. There is no limit as far as I've tested. I've been able to create about 15 stacks of 999 food within a single day, as it is only limited to how fast you click. Pressing shift+click creates 5 stacks at a time which expedites the process.