She self-published ‘Sifratna’ just for friends, family and colleagues. But it has turned into something else. — By Kara Elder “Yemeni cuisine is such a foreign thing to people,” Amjaad Al-Hussain says one Sunday afternoon in February. She’s just finished cooking a batch of adas, a hearty breakfast stew of red lentils, onions and tomatoes, spiced with cumin and coriander. As the adas sputters in its final…