The chemistry behind the character of bourbon, scotch and rye

Whiskeys have long captivated the senses of connoisseurs, whether with smokiness and a whiff of vanilla or a spicy character with hints of caramel, and now, the emerging chemistry of "brown spirits" is proving that they have distinct chemical signatures to match the complex combinations of grains, barrels, aging and other factors that yield the liquid gold poured into each bottle.

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