Forget that last answer, lol! I have too much on my mind today and was thinking water bath. Driving daughter to airport 1 1/2 hrs away today up and over a few low mt passes in the rain. Oye!
Hot sauce...I would not add butter. Oils aren't recommended unless it is from a tested recipe. Your recipe is similar to hot sauce and bbq sauces except that they all have vinegar and are water bath canned.
http://nchfp.uga.edu/how/can_03/bbqsauce.html
Still looking...