Mennonite Meat Balls (Fleischbolle)

3/4 pound ground pork
3/4 pound ground beef
1 onion, chopped finely
Salt and pepper
3/4 cup rice, soaked in water
2 eggs
1 cup breadcrumbs
1 cup catsup or tomato sauce

Mix all but the catsup and form into balls; brown balls in a pan, put in an oven dish and cover with blended catsup and 1 quart of boiling water. Let simmer in oven for 3 to 4 hours, making sure the balls haven't gone dry.