This is an easy recipe for refreshing pear sherbet that can be made simply by mixing and freezing. Peel half of a pear, dice it, and grate the other half. Add lemon juice and sugar and mix well. Put it in a freezer bag and freeze it, giving it a crunchy texture by kneading it once during the freezing process. Since it can be made without cooking, it is perfect as a snack on a hot summer day or as a dessert after a meal.