Rubbery shrimp: Overcooked, remove at C-shape, not O-shape. No sear forming: Shrimp not dry enough. Pat thoroughly before cooking. Sauce too thin: Simmer 2 extra minutes before cream. Use 36%+ cream only. Grainy Parmesan: Pre-shredded used. Always grate fresh from the block off heat. Serve with: Crusty bread, pasta, rice, polenta, or mashed potatoes.