1) Strictest Christian fast 
Eating a dry diet. ... (12 Dec 1998) ... 
Type: Term Pronunciation: zē′rō-fā′jē-ă, zēr-of′ă-jē Definitions: 1. Consumption of dry foodstuffs; subsistence on a dry diet.
Xerophagia: A dry diet. Literally, dry eating. From the Greek 'xeros' meaning 'dry' + 'phago' meaning 'to eat.'
xerophagia 1. The eating of dry foodstuffs; subsisting on a dry diet. 2. A diet of bread and water. Actually, xerophagy refers to a type of religious fast in which the jejunator [the person who fasts] consumes only bread, salt, unseasoned vegetables, and water. It`s strange that a word element [xero] which means `dry”, includes water.