Cut the bacon slices in half lengthwise. Wash plums, remove stalks and stones. Wash herbs. Pluck off all leaves or needles except for a little garnish and chop them separately.
Peel, wash and chop the potatoes and celery. Cover and cook in salted water with lemon juice for about 20 minutes
Dab the schnitzel dry, possibly knock it a little flatter. Season with salt, pepper and marjoram. Place 1 plum on each cutlet and roll up. Wrap 1 slice of bacon around each cutlet and fix with wooden skewers. Halve the remaining plums
Fry the mini roulades in hot oil until they are firm all around. Fry the rosemary briefly. Add plums, 300 ml water and stock, bring to the boil and simmer for 3-4 minutes. Season sauce with salt, pepper, vinegar and 1/2-1 teaspoon sugar
Drain the potatoes. Add butter and mash everything to puree. Season to taste with salt and pepper. Arrange everything, garnish with the rest of the herbs
Drink: red wine