Lettuce Soup/ Supa de salata

Serve 4
Ingredients
4 tbsp. butter or oil
smoked bacon
1 bud garlic
2 heads lettuce
2 cups water
lemon juice or vinegar depends on taste
1 egg yolk
1/2 cup table sour cream
salt, pepper
Preparation
Cook slowly finely chopped garlic in melted butter until soft but not brown, add bacon. Wash lettuce, tear leaves in small pieces, add to composition and cook 10 more minutes. Add salt, pepper, water and simmer 15 minutes, after that add lemon juice or vinegar.In same time, beat yolk and add sour cream. Pour over the soup stirring for 2 minutes.Then soup is ready to be served with polenta.For variation you can add beat eggs same as for omelet and just pour over the soup, so the soup will have more consistent.