 Archeological evidence shows that beer was made by first baking "beer bread", a type of well-leavened, lightly baked bread that did not kill the yeasts, which was then crumbled over a sieve, washed with water in a vat and then left to ferment.This "beer bread" closely resembles the "bouza" that is still consumed in Egypt today.There are claims of dates or malts having been used, but the evidence is not concrete.