In the blender add the garlic, ketchup, soy sauce, and ginger. Liquify
Let the chicken marinate in the sauce for a couple of hours if you have time. I have done it right away just making sure that all the chicken has ketchup on it and has worked perfectly.
I make the chicken with no skin to avoid the fat you can leave if you prefer.
In a hot pan add 1 teaspoon of cooking oil and one is hot add the chicken pieces.
Cover with the slices of onion and jalapeno
Let it cook for 4 minutes on each side
Cover with a lid leaving a small piece to uncover to let the steam escape
Cook for 15 minutes or until the chicken and onions are caramelized.
An easy tip to know if the chicken is ready is to check if the chicken legs