Peel, wash and chop the potatoes. Heat oil in a pan. Fry the potatoes at medium heat for about 10 minutes until crispy brown. Clean, wash and cut the leek into rings. Add to the pan and fry briefly. Add stock, bring to the boil and simmer at low heat for about 5 minutes. Remove the bacon edge from the salmon ham.
Dice the ham and put it into the pan. Season to taste with salt and pepper. Stir the sour cream until smooth and put it on the pan. Clean, wash and slice the tomato. Wash parsley and dab dry. Serve the dish garnished with tomato and parsley and sprinkled with pepper