Porter is said to have been popular with transportation workers of Central London, hence the name. Most traditional British brewing documentation from the 1700's state that Porter was a blend of three different styles: an old ale (stale or soured), a new ale (brown or pale ale) and a weak one (mild ale), with various combinations of blending and staleness. The end result was also commonly known as "Entire Butt" or "Three Threads" and had a pleasing taste of neither new nor old. It was the first truly engineered beer, catering to the public's taste, playing a critical role in quenching the thirst of the UK's Industrial Revolution and lending an arm in building the mega-breweries of today.
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