Moroccan preserved butter. Smen (semneh, beurre ranci) is a Moroccan preserved butter, often made from sheep and goat milk. It has a deep, pungent aroma and distinctive flavor that enhances many of Morocco's savory dishes, especially couscous. It is similar to Asian ghee, and is a flavorful ingredient in Moroccan dishes. Cooking time does not include 1-2 week aging time.