Eating Etrog from the Mitzvah campaign
During the course of the Mitzvah campaign for making a blessing on an Etrog, (Citron), the fruit was touched by many people, some of who did not perform the ritual morning handwashing, Negel Vasser, as required by Halacha (Jewish law). Is it permissible to use it after the holiday for food (as in a jam for example)?

Answer: The fruit should be rinsed three times, or the outer layer should be peeled.