Dill Gravy/Koprova Omacka

1/2 C fresh chopped dill
2 T of butter
1/2 onion, finely chopped
2 C of cold chicken stock
1/2 C of sour cream
2 T of flour
2 T of vinegar (or lemon juice)
salt, pepper, sugar to taste

Make “jiska”

Melt butter on a pan and add chopped onion; cook until bubbly and onions have a translucent look to it. While stirring, gradually add flour and stir for about 30 seconds more, until butter stops bubbling. Remove from heat, while stirring, gradually add chicken stock. Simmer for about ten minutes. Add in fresh dill and vinegar.  Add sugar and salt to taste.  Add sour cream. Simmer for five more minutes. Serve over hard-boiled eggs and slow-cooked beef with dumplings or potatoes.