Feseekh is a traditional Egyptian dish that is considered a delicacy in Cairo. It is made from fermented and salted mullet fish that is typically served during the springtime Sham El-Nessim festival. The fish is soaked in water for several days to remove the excess salt and then served with onions, bread, and a squeeze of lemon juice. Feseekh has a strong and distinctive flavor that is loved by adventurous eaters in Cairo.