Kefir Soup

Ingredients

• 6 cups beef or chicken stock
• 1/4 cup flour
• 3/4 cup rice
• 2 cups kefir
• 1/4 cup margarine or butter
• 1 clove garlic, crushed
• 1 egg yolk
• 2 tbsp mint
• 1/8 tsp cayenne pepper
• salt to taste