Shrimp and Grits Tacos Recipe

Name: Shrimp and Grits Tacos Recipe
Ingredients: 2 cups water; 2 cups milk; 1 cup coarse ground grits; Kosher salt and freshly ground black pepper; 4 tablespoons butter, divided; 4 ounces cheddar cheese, finely grated (about 1 cup); 1 pound medium shrimp, peeled and deveined; 1 medium white onion, chopped (about 3/4 cup); 2 serrano chilies, stemmed, seeded, and chopped (about 2 tablepsoons); 2 medium garlic cloves, minced (about 2 teaspoons); 1 pound cherry tomatoes, quartered (about 1 quart); 1/2 cup fresh cilantro leaves, roughly chopped; 12 corn tortillas, warmed; 2 limes, quartered