This is not Biryani but meat rice dish cooked by most Gulf Arabs. Many Muslim communities have the tradition of eating out of common plates. This a tradition from the prophet of Islam to bring the rich, poor and to remove all kind of divisions between people. Many other communities have this tradition like Afghans, Sindhi muslims. Even other arabs practice this from time to time. Often in large religious gatherings in India and Pakistan too communal eating is seen. Snigdha most of these gatherings by arabs are quite private between their friends and tribes mostly in marriages and other occasions. Often these are in areas outside cites where tents are put up and people gather together for food and bonding. It is very unusual for others (read foreigners to be invited ).