Preheat oven to 350°F. Mix half-and-half, milk, cornmeal, butter, sherry, sea salt, cayenne pepper and rosemary in medium saucepan. Bring just to boil on medium heat. Reduce heat to medium-low; simmer 2 minutes or until slightly thickened, stirring frequently. Remove from heat. Stir in cheese and cherries. Let stand 10 to 15 minutes or until slightly cooled.