Peel and finely chop the onion. Wash parsley, shake dry and chop finely, except for a few leaves for garnishing. Drain the capers and collect 4 tbsp. of liquid. Finely chop the capers, except for 2 tbsp. Heat 1/2 tbsp. oil in a small pan. Sauté onion for 1-2 minutes. Crumble the tofu finely. Place onion in a bowl and knead with eggs, 3 tsp mustard, chopped parsley, breadcrumbs, quark, tofu, chopped capers and 2 tbsp. caper liquid. Season to taste with salt and pepper. Form 12 meatballs from the mixture. Heat 2 tablespoons of oil in a large coated pan. Fry the meatballs in it for about 4 minutes in 2 portions while turning. Drain on kitchen paper
Peel and wash the potatoes and cook in boiling salted water for about 20 minutes
Meanwhile melt 4 tablespoons of butter in a large pot. Add flour while stirring. Bring to the boil until foamy. Deglaze with wine and stock. Add Worcestershire sauce, 1 tsp. mustard, 2 tbsp. caper water and 1 tbsp. lemon juice. Season with salt and pepper. Let simmer for about 5 minutes. Add cream and remaining capers. Season to taste with salt, sugar, nutmeg and lemon juice. Add meatballs to the sauce. Let it simmer for another 15-20 minutes at low heat
In the meantime, roast the almonds in a pan without fat until golden brown. Let them cool down on a flat plate. Drain the potatoes. Bring milk, 1 tablespoon butter and 30 g almonds to the boil. Mash potatoes finely in the hot milk. Season to taste with salt and nutmeg
Bring 2 tablespoons of butter to a foamy boil in a small pot. Add the remaining almonds. Remove the pot from the stove. Arrange meatballs with caper sauce and mashed potatoes on plates. Garnish with parsley. Drizzle almond butter over the mashed potatoes