A.1. Original Sauce Recipe Contest Entry. If you love the flavors of a good steakhouse, you are going to love this pasta! Skirt steak marinated for 24 hours in A1 with lemon, rosemary and garlic; grilled to perfection. The steak is thinly sliced and tossed with bow tie pasta and fresh spinach and finished with a savory A1- Porcini mushroom sauce and dollops of creamy goat cheese.