Try Carolina reaper from Dave’s famous chicken. First 3 bites were good. Then it hurt. Then it hurt again 6 hours later. I cried, I sweated. My coworker ate two like it was nothing.I used to win bets in high school by eating all my tacos with the extra hot sauce from the sauce bar and no drink. I'd forgo the drink to get another taco. I loved those things with that sauce on there. The flavor of that sauce was sorta like the Fire sauce from TB, but TB's is not as hot. It has a hint of the same spice whatever the hell it is.
A guy I went to school with worked at one and said they made up the all their bar sauces there in the store and the only difference was the amount of pepper seeds in them. They got 3 different mixes from corporate and had to add water as they were concentrated. The premade packets from Taco Tico aren't even close to the same as the bar sauces. I ate at one in Guymon a few years ago and forgot that part. Packets weren't good. lol