We loved these burgers! The smokey chipotle added a great flavor. I forgot to take out the seeds so it was just a bit too hot for us so I cooled it down with a dab of ranch dressing on the bun instead of mustard or mayo. One idea to make mixing beef and chipotle easier (and not burn your hands) is to put all the ingredients in a large ziploc bag and mix it from the outside. I got the chipotle and onion evenly distributed and didn't have to worry about getting the chile heat off my hands.