To make creamy and rich garlic butter shrimp scampi without wine, start by sauteing minced garlic in oil for 30 seconds. Then stir in the fish stock, lemon juice, parsley and pepper flakes. Bring the sauce to a simmer on the stove, then add the butter and stir continuously for 1 minute. The butter will start to emulsify to make a creamy, thick sauce. If you want this sauce creamier, you can stir in 2 more tablespoons of butter after adding all other ingredients. Stir for 1 minute, or until the butter melts and the sauce becomes creamier. Or, for a more herb-flavored scampi sauce, try replacing the butter with 2 tablespoons of pesto.