Enchiladas Verde

Name: Enchiladas Verde
Ingredients: 2 whole young chicken breasts; 1 cup chicken stock (or water); 2 teaspoons salt; 2 garlic cloves, chopped; 1 teaspoon black pepper; 3/4 cup corn or canola oil; 1 dozen flour tortillas; Salsa Verde, recipe follows; 1 pound grated asadero-style cheese (substitutes: mozzarella or Monterey Jack); Sour cream, for garnish; 2 pounds green tomatillos; 1 or 2 jalapenos; 3 large garlic cloves; 1/2 cup water; 1 tablespoon salt