The Triangle of Tastiness is a food triangle comprised of three items: clams (mollusks), beef jerky (dried meats), and grape punch (punches).
The Triangle of Tastiness is enforced by Vendetta because these are some of her favorite foods. A toad fiend makes sure Mrs. Millet only serves clams (mollusks), beef jerky (dried meats), and grape punch (punches) in the Mu Elementary School cafeteria. In the episode "Vegetables", Charlotte sets out to change the Triangle of Tastiness and add vegetables to the menu, in addition to make Vendetta like vegetables. However, this failed because the next day, the menu is reverted to its regular self.