I planned on smoking a couple whole chickens tomorrow that I bought from the butcher. While at the grocery store I picked up a rack of spare ribs on a whim to try. I prepped the ribs tonight. I removed the membrane but then I also noticed this extra "flap" of meat on the ribs. I decided to just cut it off. What was this extra meat on the ribs? Should I have left it on? Anyway I made a mix of yellow mustard, apple juice, ACV, and worcesterier sauce as my binder and brushed that on the ribs. Thinking maybe the vinegar will help to tenderize the meat possibly. I was lazy and just used Stubbs BBQ rub I got on sale at the store. I applied the rub liberally and wrapped it plastic wrap to put in fridge overnight. Trying to decide what I want to inject it with tomorrow. I was thinking a mix of Apple juice/ACV with a little of leftover rub. Or I was even seeing people injecting butter. Any thoughts on injection? I do plan to foil debating on how long. I do like them tender so thinking maybe I'll do this one wrapped for 1.5 hours and see how I like that. So do a 3.5-1.5-1.