Adulterated food is food that is not the way it should be. It might have the wrong ingredients or be made with low quality ingredients. It might have been made in an unsafe or unhealthy way, or chemicals might be added to it that shouldn't be there. Sometimes this happens when a manufacturer wants to save money, so they use cheaper ingredients or a not-so-safe process to make the food. Eating adulterated food can make you or your family sick, so it's important to make sure the food is safe to eat.