Patiala peg

The Patiala peg is a peg in which first water is poured and then suddenly the liquor has been added and suddenly it is to be drunk though the rough and ready measure is the amount of liquor needed to fill a glass equal to the height between the index and little fingers when they are held parallel to one another. Even major liquor companies have started selling their products in the single drink packaging of 90 ml & 120 ml bottles in India. The name originates from the city of Patiala, which was once a state known for the extravagant ways of its royalty and extraordinary height of its Sikh soldiers.

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Wikipedia