Recipe below video.
Start with caramelizing the onion.
Slice it up finely and heat olive oil in a pan at medium heat. I use 6 of 9.
Add onions and a pinch of salt. Fry slowly until golden and soft. It takes about 15-20 minutes, but is well worth that wait.
Fold the meat into a burger shaped circle. You wanna cook it like this, not in a stack that gets to compact ;)
Slice the jalapeños and add it to the meat with smoked sea salt and ground pepper.
Heat a pan with olive oil. Use high heat. Place the meat in the pan and add cheese on top. Cover with a lid. Cook until the cheese is melted. It goes quite quick, so keep watching.
Toast burger buns in oven.
Plate the dish with chili mayo on the bottom bun. Then caramelized onions and the meat. Finish with propper American mustard and enjoy:)