录 tsp horseradish, peeled and grated
1 banana shallot, finely chopped
1 tbsp tomato ketchup
2 tbsp mayonnaise
2 pickles, sliced
dash Worcestershire sauce
dash Tabasco
ready salted crisps
4 slices Swiss cheese
8 slices salt beef or pastrami
8 slices rye bread
80g/3oz sauerkraut