Fancy Macaroni

INGREDIENTS

• 4 cups Macaroni
• 8 Tablespoons Butter (Salted Butter)
• 2 whole Medium Onions, Cut In Half And Sliced Thin
• 10 slices Regular Bacon
• 1 Tablespoon Bacon Grease (reserved From Bacon Slices)
• 1/4 cup All-purpose Flour
• 2 cups Whole Or 2% Milk
• 1/2 cup Half-and-half
• 2 whole Egg Yolks, Beaten
• Salt And Pepper, to taste
• 1/2 cup Grated Gruyere Cheese
• 1/2 cup Grated Fontina Cheese
• 1/2 cup Grated Parmigiano Reggiano Cheese
• 4 ounces, weight Chevre (soft Goat Cheese)