Xerophagy ("dry eating", from Greek ξηρός "dry" and φαγεῖν "eat") is the practice of eating dry food,[clarification needed] especially food cooked without oil. In Eastern Christianity, xerophagy is the form of fasting observed during Great Lent and certain other fasts, in which vegetables cooked with water and salt are eaten, together with such things as fruit, nuts, bread and sometimes honey. It many cases in that tradition it can be considered an extreme form of veganism.
In some historic and modern military organizations, it may be used as a disciplinary measure; e.g. In the 35 Canons of Saint John the Faster, the penance for any monk caught in homosexual acts includes a xerophagic diet for three years along with other punishments.