The one my wife makes has bbq sauce she uses Kraft or open pit or whatever other sauce she has a coupon for. That Uncle Bobs when I say vinegar based, it ain't pure vinegar like a pulled pork sauce. But it's got enough where you don't have to refrigerate. I know the dudes nephew they say it's cause they invented it before they had refrigerators. Plus it's pretty peppery so I think I'll skip the cayenne and reduce the hot sauce.
18" Weber OTS aka #1, Smokey Joe gold, 18" WSM, dirt late model