To reheat means to warm up food that has already been cooked and cooled down. When you reheat last night's pizza in the microwave or warm up leftover soup on the stove, you're bringing the food back to a temperature that makes it taste good and feel hot again.

Reheating is different from cooking something for the first time. The food is already done: it just needs to be warm again. Your parents might reheat pasta for lunch, or you might reheat a slice of casserole from dinner. Some foods reheat better than others. Rice and pasta usually reheat well, while french fries often get soggy.

You can reheat food in a microwave, oven, toaster oven, or on the stovetop. Some people say certain foods taste even better reheated the next day, like chili or lasagna, because the flavors have had time to blend together overnight. When you reheat food, make sure it gets hot all the way through.