Fish patties are very popular in mexico, theyre easy to make and perfect as a beefless meal. These mexican shrimp patties with serrano pepper and yogurt lemon salsa are prepared very fast since the shrimp cooks in minutes. Theyre also very rich in flavor. The white onion makes them sweet, the serrano pepper makes them very spicy and the sauce with its greek yogurt, cilantro and lemon refreshes your palate. Serve with a green salad and a fruit salad for a light summer meal.