Both Gilda Angel and Méri Badi suggest serving leek fritters for Rosh Hashanah. Matzoh meal in the recipe makes them a good choice for Passover as well. And, of course, because they are fried they would be ideal for Hanukkah. The mixture of leeks, bread, and eggs also can be baked as a gratin. This baked version, called prasifutchi, can be thickened with potatoes instead of bread or matzoh.