Serious Eats: Recipes
Sopes de Pollo con Frijoles (Chicken Sopes with Beans)
Note: You can use store-bought salsa verde if you'd like. Masa harina is dehydrated corn meal treated with lime. It can be found in most Latin grocers or large supermarkets. I use the Maseca brand, which is sold near the flours or in the international aisle.