Food.com and Epicurious offer good recipes for Polish galumpkis. Food.com's recipe uses beef. Epicurious' recipe uses both beef and pork, and it includes a sweet and sour sauce.
To make Food.com's version of galumpkis, boil one head of cabbage for three to four minutes. Cool the cabbage, and peel off 12 large leaves. Remove the hard stems from each leaf, and set them aside. Mix together 1 pound of ground beef, 1 cup cooked rice, 2/3 cup diced onion, a beaten egg, 1 14 1/2-ounce can diced tomatoes and 2 tablespoons Worcestershire sauce. Season the mixture to taste with salt, pepper and garlic powder, and set it aside.
To make the sauce, mix together 2 15-ounce cans tomato sauce, 2 tablespoons minced garlic, 2/3 cup sugar and 1 tablespoon lemon juice in a sauce pan and heat through. Fill each cabbage leaf with the ground beef mixture, and roll each leaf, folding in the sides. Place the rolls seam down in a baking dish, cover with sauce and bake for one hour at 350 degrees F.
Prepare Epicurious' sweet and sour sauce with 1 1/2 quarts crushed tomatoes, 2 garlic cloves, 1 tablespoon white wine vinegar and 1 tablespoon sugar. Brown 1 pound each ground beef and pork in oil with 2 minced garlic cloves and 1 chopped onion. Add 2 tablespoons tomato paste, a splash of red wine, 2/3 cup sauce and 2 tablespoons chopped parsley. Add egg and cooked rice, and prepare rolls as above.