Ale to the selling of beer labeled "strong beer" that had actually been diluted with small beer. In medieval times, ale may have been safer to drink than most water (the germ theory of disease was unheard of, and the sterilizing properties of boiling unknown); however, there is no period evidence that people were aware of this nor that they chose to drink ale for this reason. The alcohol, hops, and some ingredients in gruit used to preserve some ales may have contributed to their lower load of pathogens, when compared to water. However, ale was largely safer due to the
Brown ale breweries, such as Whitbread, introduced a second weaker and cheaper brown ale that was sometimes just a sweetened version of dark Mild. These beers had an original gravity of around 1.037. After World War II, most breweries stopped producing these stronger brown ales, with the exception of some breweries in the northeast of England. The majority had an OG in the range 1.030–1.035, or around 3% ABV, much like Manns Brown Ale today. North American brown ales trace their heritage to American home brewing adaptations of certain northern English beers, and the English influence on American Colonial Ales. English brown