Heat the butter in a pot, add diced onions and simmer. Peel the potato, dice and add to the onions. Afterwards pour the broth into and heat up to boiling. Add the peas and boil till all gets tender. Blend to cream, season with salt and pepper. Serve with pieces of salmon and a tablespoon of sour cream.
1 l meat broth
200 g smoked salmon
1 onion
1 potato
4 tablespoons sour cream
2 tablespoons butter
salt, pepper