Beid hamine is an ancient Egyptian dish. The slow cooking yields eggs that are creamy and smooth. The onion skins impart a delicate brown color to the whites. The coffee grounds are optional, but they help add the desired brown color. Along with Ful Maddamas, Beid Hamine makes a typical Egyptian breakfast. Don't forgo the oil, it is added to minimize evaporation of the water during the long simmer.