½ pound ground pork
¼ cup milk, or as needed
¼ cup finely grated onion
1 egg
¼ cup bread crumbs, or as needed
¼ cup all-purpose flour
¼ cup seltzer water
salt and pepper to taste
¼ cup margarine
Mix the veal and pork together in a bowl, and stir in the milk, onion, and egg. Mix the bread crumbs into the meat. Sprinkle in the flour, and knead well to mix. Stir in the seltzer water, season to taste with salt and pepper, and mix well. The mixture should be very moist, but not dripping. Chill the meat mixture for 15 to 30 minutes in the refrigerator, to make the meatballs easier to form. Heat the margarine in a large skillet over medium heat. To form meatballs, scoop up about 2 1/2 tablespoons of meat mixture with a large spoon, and form the mixture into a slightly flattened, oval meatball about the size of a small egg. Place the meatballs into the heated skillet, and fry for about 15 minutes per side, until the meatballs are well-browned and no longer pink in the center.