Mushroom And Swiss Sliders With Spicy Fry Sauce

Name: Mushroom And Swiss Sliders With Spicy Fry Sauce
Ingredients: 1/3 cup Mayonnaise; 2 tbsp Ketchup; 1 tsp Cayenne Pepper; 4 tbsp Butter; 1/2 whole Medium Onion, Finely Diced; 8 oz White Mushrooms, Chopped Finely; 1/2 cup White or Red Wine; 4 dashes Worchestershire Sauce; Kosher Salt and Freshly Ground Black Pepper; 2 lb Ground Beef; 4 tbsp Heavy Whipping Cream; 4 dashes Worcestershire Sauce; 1 tsp Kosher Salt; Freshly Ground Black Pepper; 4 slices Swiss Cheese, cut into four squares; 8 whole Dinner Rolls