Cut the cured pork into small cubes. Cut the top of the bread all around and cut out a wedge-shaped lid. Cut the lid into small cubes. Heat 1-2 tablespoons of oil in a large frying pan. Fry the cured pork loin for 4-5 minutes and remove.
Heat the butter in the frying fat. Roast bread cubes in it, take them out and let them cool down.
Clean, wash and cut the salad into strips. Clean and wash paprika, cucumber and radishes. Dice paprika. Quarter cucumber lengthwise and cut into slices. Cut radishes into slices.
For the vinaigrette, peel and chop the onion. Mix vinegar, salt, pepper and sugar. Fold in 3 tablespoons of oil. Stir in onion. For the cocktail sauce, mix mayonnaise, ketchup and milk. Season with Worcester sauce, salt, pepper and sugar.
Mix cured pork, salad, vegetables and vinaigrette. Fill into the bread, arrange the rest in a bowl. Pour the cocktail sauce and croutons over it. Drink tip: light red wine, for example a Bardolino.