1- Boil the rice in meat or chicken broth, on low heat 2- Beat the yoghourt with the egg yolks and flour. Stirring constanly, slowly add 2 cups of boiling stock. Add it to the meat stock with rice. Let simmer for 10 minutes. 3- Heat the butter. Add dried mint. Leave on low heat for 1 minute. Pour it over the soup and serve.