Cheeseburger a lo Cubano (Cuban Cheeseburger)

makes 6 burguers

1/2 lb. ground beef
1/2 lb. ground pork
1 small onion, finely chopped
1 clove garlic, minced
1 tbs. mustard
6 slices American  cheese
6  hamburger rolls
3 tbs. vegetable oil
Ketchup, salt, pepper to taste

Product Description

Mix ground  meats with onion and garlic. Add 1 tbs. mustard and form into thin
patties. Join two patties together with a slice of cheese in the middle.  Heat oil
in pan and cook patties over medium heat  until well done on both sides.
Serve in rolls, add ketchup, salt and pepper to taste.