Step 1 - Cook the sausages in plenty of boiling water with salt, oregano and garlic for 5 minutes. Keep warm.
Step 2 - Separately, peel and cut the tomatoes into small cubes. Dress with oil and salt.
Step 3 - To assemble: cut the bread, heat them in the oven or grill. Insert the cooked sausage, add the tomato, sauerkraut and American sauce. Finish with mayonnaise.
Step 4 - Optional: serve with mustard and red chili paste.