1. Let raw food spoil fast (~1-3 rl days)
2. Food preparing is a way to increase time that food will stored.
3. Some recipes must be a way for conservation, allow store food for very long time periods.
What that will give?
- Will be not so bore to play: you will require to think how to store your food longer, or use it faster (actually i always have a house full of meat in cupboards)
- Advantage for trade. You don't need to prepare and trade pies only, because pies is OP and you don't need any other foods. Therefore you will use less popular recipes, that stores more time for trading.
- It can be a way to add some recipes i.e. smoked food, conservated food, spiced food.