Clean, wash and finely dice the soup greens. Put 1 1/2 litre of water, wine, soup greens, bay leaf, salt and juniper in a fish pot and boil for 20 minutes over a mild heat. Wash potatoes thoroughly and boil for 20 minutes.
Wash the pike and place it on the fish insert. Leave to stand at very low heat for 20 minutes. Peel and finely chop the onion. Heat a tablespoon of butter and fry the onion cubes in it until transparent.
Add cream and let it boil down a little. Stir in sour cream and season to taste with salt, sugar, lemon juice and nutmeg. Drain capers and add. Drain, rinse and peel the potatoes.
Wash the dill and chop finely, except for something to garnish. Melt the rest of the butter and toss the potatoes and chopped dill in it. Arrange on a plate with the pike. Garnish with lemon and dill.
Extra sauce is fine.