Add the yogurt in a saucepan, add the starch and the chicken stock powder and salt, mix them well, raise it over the stove and stir constantly until it boils.
Add the kubbeh to the yougurt and bring to a boil for a minute.
Prepare the marinade by frying garlic and mint in olive oil and sprinkling it on the face of the yogurt kubbeh. Serve with rice noodles.