The first time, I used two jalapeno peppers instead of one. The next time, I used two chipotle peppers. I also had the poblanos in their as well both times. The chipotle definitely enhanced the flavor. Gave it another element. I also boosted the brown sugar a little bit. Not sure how much, I just eyed it. Probably between 1/8-1/4 cup extra. When I do them again, I will add another chipotle pepper to get more of that smokey heat. Good luck, and keep us posted.