Mushroom soup with buckwheat (Croatian Side)

Chop the onion and garlic, cut the mushrooms into slices and wash the buckwheat. Heat the oil and lightly fry the onion. Add the mushrooms and garlic and continue sautéing. Add the salt, vegetable seasoning, buckwheat and bay leaf and cover with water. Cook over low heat and, just before it is completely cooked, add the pepper, sour cream mixed with flour, chopped parsley and vinegar to taste.

foods：
150 g mushrooms
50 g buckwheat
4 tablespoons vegetable oil
40g onion
2 cloves of garlic
1 bay leaf
1 tablespoon vegetable broth cube
50 ml sour cream
A pinch of white wine vinegar
Top Parsley