The first records of the use of yeast are concerned with the production of a type of acid beer called “boozah” in 6000 BC Egypt. The processes for producing wine and beer and leaven bread probably developed in parallel over the next few thousand years. 1 In the time of Romans beer was a common drink among the inhabitants of Gaul, Spain and Germany. The Britons welcomed the production of beer by Romans and adopted the beer as their national drink.