Food

Overview
Food is what nourishes populations. It helps them grow in number and makes them happy. The more food variety you have the better your populations will do. Populations and characters have a certain degree of food memory. This also applies to goods like clothes, jewelry, and other such things. Losing access to a food of course lowers happiness pretty quickly. The longer populations have access to a food and the more popular it is the harder the hit. At a certain point instead of merely losing the boost from a food you start to take a penalty as well. Certain classes of food are more valued, especially among the higher classes. Cutting off a trade route providing prestigious food could even topple an empire if done right. Propaganda can, slowly, be used to improve the value of a food, especially a rare one. You can do this to make your own people happier or to upset the people of an enemy if you can restrict or cut off their access to that food.