Leftover

In The Sims 2: Seasons and The Sims 3, a Sim can store leftovers by putting them into the refrigerator.

The Sims 2
In The Sims 2, leftovers in the refrigerator or in a Sim's personal inventory can be stored forever. If leftovers are stored in a refrigerator, they will not be lost if the fridge is sold and replaced, but they will be lost if the household is moved to a new lot, even if one member takes the fridge in inventory.

Since The Sims 2: Kitchen & Bath Interior Design Stuff is based on The Sims 2: Pets, the new refrigerators included with it do not have the ability to store leftovers. Fixes are available at ModTheSims:


 * Fix for players who do not have Apartment Life or Mansions & Gardens


 * Fix for players who have either Apartment Life or Mansions & Gardens

The Sims 3
In The Sims 3, leftovers will go bad after time. Also, eating leftovers from a cheap fridge might give a negative moodlet. Reaching level 10 in the Culinary Career rewards the Sim with a Master Chef Fridge that keeps food indefinitely.