India Pale Ale, abbreviated IPA, is an ale that is light amber to copper in colour, medium to medium-high alcohol by volume, with hoppy, bitter and sometimes malty flavour. IPA is a style of beer that is usually included in the broader category of pale ale. It was first brewed in England in the 18th century.
Today, IPA is a popular style of beer among American craft brewers. IPA descends from the earliest pale ales of the 17th century. The term originally merely denoted an ale which had been brewed from pale malt.
The Pale Ales of the early 18th century were lightly hopped and quite different to later interpretations. By the mid-18th century, pale ale was mostly manufactured with coke-fired malt, which produced less smoking and roasting of barley in the malting process, and hence produced a paler beer. One such variety of beer was October beer, a pale well-hopped brew popular among the landed classes, who brewed it domestically; once brewed it was intended to cellar two years.
The October beer of George Hodgson's Bow Brewery was the world's first India Pale Ale. Bow Brewery beers became popular among East India Company traders in the late 18th century because of the brewery's location and Hodgson's liberal credit line of 18 months. East Indiamen transported a number of Hodgson's beers to India, among them his October beer, which benefited exceptionally from conditions of the voyage and was apparently highly regarded among consumers in India.
Bow Brewery came into control of Hodgson's sons in the early 19th century, but their business practices alienated their customers. During the same period, several Burton breweries lost their European export market in Russia because of new tariffs on beer, and were seeking a new export market for their beer. At the behest of the East India Company, Allsop brewery developed a strongly hopped pale ale in the style of Hodgson's for export to India.
Other Burton brewers, including Bass and Salt, were anxious to replace their lost Russian export market and quickly followed Allsop's lead. Likely as a result of the advantages of Burton water in brewing, Burton India Pale Ale was preferred by merchants and their customers in India.