Boil up red wine, vinegar, 1/4 litre water, sugar and spices. Peel onions and cut into rings. Add onion rings and let them simmer for about 5 minutes at low heat. Then let the marinade cool down.
Wash herrings thoroughly and dab dry. Mix flour with a little salt and pepper. Turn the herrings in the spiced flour and tap off the excess flour. Heat the oil in a pan and fry the herrings one by one on each side for about 4 minutes until golden brown.
Place the herrings in a large bowl and allow to cool slightly. Then pour the marinade over the herrings. Wash the lemon hot, cut into slices and place on the herrings. Let the herrings soak for a few hours (preferably overnight).
Then wash the potatoes thoroughly and cook in boiling salted water for about 15 minutes. Mix curd and sour cream. Peel garlic. Wash herbs and dab dry. Chop the garlic and herbs, except for some dill and parsley for garnishing, and stir into the cream.
Season cream with salt and pepper. Drain the potatoes, rinse briefly with cold water and peel off the skin. Arrange herrings with potatoes and herb cream. Serve garnished with remaining herbs.