Culture of Tunisia are boiled in the lower half. The top half has holes in the bottom through which the steam rises to cook the grain which is put in this part. Cooked this way the grain acquires the flavour of whatever is below. The usual grain is semolina. To serve, the grain is piled in the middle of a dish, and the meat and vegetables put on top. A sauce can be then poured over before serving. Like in the rest of North Africa, couscous is served on all occasions. It is traditionally eaten with lamb, the semolina must be very fine,
Birbeck granules Birbeck granules Birbeck granules, also known as Birbeck bodies, are rod shaped or "tennis-racket" cytoplasmic organelles with a central linear density and a striated appearance. First described in 1961 (where they were simply termed "characteristic granules"), they are solely found in Langerhans cells. Although part of normal Langerhans cell histology, they also provide a mechanism to differentiate Langerhans cell histiocytoses (which are a group of rare conditions collectively known as histiocytoses) from proliferative disorders caused by other cell lines. Formation is induced by langerin. The function of Birbeck granules is debated, but one theory is that they migrate to the