This is not an old, traditional ice cream but one developed by Egyptian expatriates in Europe with traditional ingredients and flavorings. It is very rich. Some Indian and Middle Eastern stores sell blanched and slivered or ground pistachios. If they are not available, you will have to buy shelled pistachios and blanch them for a few moments in boiling water to detach their skins, then peel them (a time-consuming labor), and grind them. Use 1 cup shelled pistachios to obtain 1 cup ground ones.
Cooks' Note
Some people cheat and use store-bought vanilla ice cream. Mix in rose water and pistachios and freeze again.
