1) Beer of ancient times 
ancient Egyptian beer
• (n.) A kind of ancient malt beverage; a liquor made from malt and wheat.
Zy'thum noun [ Latin , from Greek ... a kind of beer; -- so called by the Egyptians.] A kind of ancient malt beverage; a liquor made from malt and wheat. [ Written also zythem .] 
zythum, zythem A kind of ancient malt beverage; a liquor made from malt and wheat.