1. Cut twelve 30 inch-long strips of cheesecloth**. Arrange 2 strips of cheesecloth into a cross. In the center of the cheesecloth, stack 3 to 4 potatoes, 3 to 4 pieces of kielbasa, 1 lobster, 2 pieces of corn, 4 to 5 mussels and 6 to 8 clams. Bring the ends of the cloth to center to enclose all the ingredients completely; tie each package with kitchen string. Repeat process with remaining cheesecloth, vegetables, sausage and seafood to make 6 packages.
2. Meanwhile, pour enough water to come up 1 inch in two large lobster, canning or pasta pots; bring to a boil
3. Place three packages in each pot. Cover each pot and return water to a rolling boil. Boil seafood packages 20 minutes.
4. With tongs, remove seafood packages and transfer to 6 large serving bowls. Serve with some of the cooking broth, butter and lemon. Makes 6 servings.