Looking for a real deal Carolina BBQ sauce recipe

Yeah are you looking for Carolina gold or the Eastern Carolina variety?

I like the Eastern Carolina sauces I've tried

1 tablespoon butter
1 small onion, finely chopped
1 clove garlic, minced
1 cup Dijon mustard
3/4 cup firmly packed brown sugar
3/4 cup distilled white vinegar
1 tablespoon hot sauce (preferably Crystal), or more to taste
Coarse salt (kosher or sea) and freshly ground black pepper

Step 1: Melt the butter in a heavy nonreactive saucepan over medium heat. Add the onion and garlic and cook until soft but not brown, about 3 minutes.

Step 2: Stir in the mustard, brown sugar, vinegar, and hot sauce and add 1/2
cup of water. Let the sauce simmer, uncovered, until thick and richly flavored, 6 to 10 minutes. Taste for seasoning, adding more hot sauce as necessary and seasoning with salt and pepper to taste. Let the sauce cool to room temperature before serving. In the unlikely case you have any mustard sauce left, store it in a clean jar in the refrigerator. It will keep for at least a week; bring it to room temperature before using.

BBQ Bible...always on my countertop