I dont mix anything in mine. If you like burgers, which is my favorite really, make them thinner and cook on a very hot pan at first. Cook for about 2 minutes or when the edges turn color and the juice starts to come up through the meat. Then flip and turn the heat all the way down for a minute then shut off. I add cheese or what ever else you want on it and once that is melted should be done and still juicy. no longer than five minutes.