باب زويلة
In the Middle Ages, the making of "fūl" in Cairo was monopolized by the people living around the Princess Baths, a public bath in a tiny compound near today's public fountain of Muhammad ‘Ali Pasha, a block north of the two elegant minarets of the Mosque of Sultan al-Muayyad above the 11th century Bab Zuweila gate. During the day, bath attendants stoked the fires heating the "qidras", which are huge pots of bath water. Wood was scarce, so garbage was used as fuel and eventually a dump grew around the baths. When the baths closed, the red embers of the fires continued to burn. To take advantage of these precious fires, huge "qidras" were filled with fava beans, and these cauldrons were kept simmering all night, and eventually all day too, in order to provide breakfast for Cairo's population. Cookshops throughout Cairo would send their minions to the Princess Baths to buy their wholesale "fūl".