Food

According to Wikipedia: 'Food is any substance, usually composed primarily of carbohydrates, fats, water and/or proteins, that can be eaten or drunk by an animal or human being for nutrition or pleasure.'

For the Sims it's a lot easier. No food = low hunger = starvation = death.

The Sims
The Sims featured only a few types of food. Sims with a fridge can have a snack, or can prepare a meal. The meal will be either steak and beans, a salad, or a can of beans, depending on what else is available. If the Sim doesn't have, or can't get to, a stove, microwave, or toaster oven, the meal becomes a salad. If the Sim doesn't have, or can't get to, a preparation surface, the meal becomes a can of beans. Sims can use the BBQ grill to cook a plate of hamburgers. Sims do not have to buy food, but are charged each time they prepare a meal or have a snack. Sims can also order pizza over the phone to satisfy their hunger.

Later expansion packs provided more food for Sims to eat, including a birthday cake, cookies, and turkey. This food is bought from the Buy catalog, and is ready to eat when bought. But the most significant upgrade was that of Makin' Magic, which provided an oven which allows Sims to cook more types of food, as long as the required ingredients were in the Sim's inventory.

The Sims 2
Food in The Sims 2 is more complicated, featuring many new choices, like Mac and Cheese, Lobster Thermidor and Baked Alaska. Food is even classified into three types: Snacks, Meals and Dessert, with Meals also broken down depending on the time of day: Breakfast, Lunch and Dinner.

The types of food Sims can prepare depends on their level in the Cooking skill. Also, some foods require certain equipment to make.

One difference from Sims 1 is that it's possible for a Sim to become distracted while waiting for their food to cook. This can result in a burned meal, or even a fire. Even if the Sim doesn't get distracted, they can still burn a meal, as even the best cooks don't always get it right. Another difference is that cold foods, such as cereal and lunch meat sandwiches, are available, so Sims with little Cooking skill can eat without risking fire. Also, Sims 2 fridges occasionally have to be restocked, which means that it's necessary to buy groceries once in a while.

Children can only prepare food using the toy oven.

Later Expansion packs such as Holiday Party Pack, Open for Business and Seasons added more foods for Sims to cook. Bon Voyage adds special foods that can only be eaten on vacation.

Modded Food
Modded food (Modified food) is food downloaded from sites like The Sims Resource and ModTheSims2. These sites have a dedicated "food" section, where you can download several types of food like ice cream, Chinese chicken and French bread. Earlier versions of food for The Sims 2 have had many problems which creators tried to overcome, like food not disappearing, among other things.