Wash the meat, dab dry, place on the fat pan of the oven and pour on 1/2 litre of water. Cook in the preheated oven (electric cooker: 175 °C/ circulating air: 150 °C/ gas: see manufacturer) for approx. 50 minutes. Spread with jam approx. 5 minutes before the end of the cooking time
In the meantime, wash the potatoes and cook them in boiling water for about 20 minutes. Wash parsley, shake dry and chop finely, except for a stem for garnishing. Wash and quarter the tomatoes, remove the core and roughly dice the flesh. Peel and halve the onion and cut into strips. Halve the gherkins lengthwise and cut into slices. Mix mayonnaise, yoghurt and mustard. Stir in 3/4 of the chopped parsley, tomatoes, onion and gherkins. Season to taste with salt, pepper and lemon juice
Drain the potatoes, rinse and peel them. Let the potatoes cool down, cut them into slices and stir them carefully into the sauce. Cut the roast into slices and serve on a plate. Sprinkle potatoes and roast with the remaining parsley. Garnish roast with tomatoes and parsley. Add potato salad
Waiting time approx. 30 minutes