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Whisky drinkers often refer to their pour as a “dram”—but what does that word actually mean? Is it a real measurement, or just a catch-all term for any amount of whisky? The Whisky Advocate editors each have a strong opinion about just what a dram is, and they went head to head in settling the debate once and for all.
http://whiskyadvocate.com/what-is-whisky/