Cilantro Chicken Sub

Process cilantro (stems included), garlic, fish sauce, and olive oil in a food processor or blender until smooth. Rub all over 4 pieces chicken. Cover and refrigerate for 1 hour

Season chicken with salt and pepper, then grill until cooked.

Spread a tablespoon of mayonnaise on the bottom half of each focaccia. Lay a chicken breast on each slice of bread, garnish with cilantro leaves, then cover with the top half of focaccia. Serve.