March 31: National Clams on the Half Shell Day Food Holiday Items presented on the half shell make Good Citizens naturally skittish. Recipes: Raw Clams on the Half Shell by FoodNetwork.com Grilled Clams on the Half Shell by Epicurious.com Raw Clams on the Half Shell by CookPad.com Baked Clams on the Half Shell by CookingChannelTV.com Social: Tweet Back to the month page! You know there's more stuff to click!