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Main Gallery - North-India - Patiala
  Patiala is a city in the Punjab located in the south-eastern part of India.

Any serving of alcohol which is double than the normal is referred to as the Patiala Peg.
There are multiple stories behind this epithet, most related to the opulent and hedonistic lifestyle of one of the maharajas of Patiala - Maharaja Bhupinder Singh, who was a heavy drinker.