Fresh pear

 is a food item found in Fallout 3. It can restore some of your hit points and gives you no radiation.

Location

 * They can only be found in Dr. Madison Li's Science Lab in Rivet City, though taking them is considered a crime. Dogmeat can get them for no karma penalty.
 * If you wait (manually, not by Waiting), Janice Kaplinski will eat the ones in the lab.
 * The scientists have a large stock of fresh fruit and vegetables, and will say, "Be careful, that stuff's worth more than you" or "Don't touch the vegetables, they're fragile."
 * You can also wait until everyone is busy going to the Jefferson Memorial or moved to the Citadel and steal the fresh fruit without fear of witnesses.