Romanian Lettuce Soup - cooking recipe

Ingredients

2 tablespoons oil
1 onion
1 garlic clove
2 heads lettuce (about 2 lbs in all)
lemon juice
2 cups water
1 egg yolk
1/2 cup table cream
parsley
salt and pepper

Preparation

Cook slowly chopped onion and garlic in oil until soft but not brown.
Wash lettuce, tear leaves in small pieces, add to cooked onions and cook about 10 more minutes.
Add salt, pepper, water and simmer 15 minutes.
Add lemon juice and simmer 5 more minutes.
Meanwhile, beat yolk in large serving bowl and add cream.
Pour soup very slowly, drop by drop, over egg mixture stirring vigorously to prevent curdling.
Do not cook again. Sprinkle chopped parsley on top.