Hungarian Mushroom Soup

Ingredients

• 2 tbsp butter
• 1 small onion, finely chopped
• 1 lb mushrooms, sliced
• 2 cups vegetable or chicken broth
• 1 cup milk
• 2 tbsp all-purpose flour
• 1 tbsp paprika
• 1 tsp dried dill
• 1 tbsp soy sauce
• ½ cup sour cream
• 1 tbsp lemon juice
• Salt and pepper to taste
• Fresh parsley for garnish