Melt butter in a saucepan over medium heat
Add minced garlic and cook until fragrant
Stir in flour and cook for 1 minute
Slowly whisk in broth, milk, or cream until smooth
Add salt, black pepper, and paprika to taste
Simmer until the sauce thickens
Stir in lemon juice
Add chopped parsley or dill if desired
Fold in cooked shrimp or serve the sauce over shrimp