about 1 cup each equal parts white vinegar and soy sauce (I tend toward 3:2 for the tanginess)
1 bottle or can of beer (he used Bud, but I prefer a hazy)
1 rough chopped sweet onion
1 whole head smashed garlic cloves
red chili flakes to your liking
1 tablespoon or so whole black peppercorns or ground or both
2 tablespoons brown sugar
Stir and taste prior to adding ribs.
Trim and cut ribs (2 racks), marinate minimum 12 hours (I’ve pushed to 72 for heavier flavor), grill med-high heat. Turns out fantastic every time. edit: spare ribs specifically, as baby backs have more fat and are more tender to start