In a medium saucepan over medium heat, melt the butter. Be careful not to let it brown.

Once the butter is melted, add the minced garlic. Sauté for about 1 minute until fragrant but not browned.

Stir in the Old Bay seasoning, cayenne pepper, paprika, black pepper, and salt. Let these spices toast in the butter for about 30 seconds to enhance their flavors.

Pour in the seafood stock (or water) and lemon juice. Add the Worcestershire sauce. Stir well to combine all ingredients.

Reduce the heat to low and let the sauce simmer for about 5-7 minutes. This allows the flavors to meld together. Stir occasionally.

Taste the sauce and adjust the seasoning if necessary. If you want it spicier, add more cayenne pepper; if you need more acidity, add a little more lemon juice.

If using, sprinkle the chopped parsley over the sauce for a fresh touch right before serving. You can either pour this sauce directly over your boiled seafood or serve it on the side for dipping.