A little insider James Bond info on his favorite drink, the Vodka Martini, Shaken not Stirred.
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Our source, John Hayes of Penn State, says that since shaking a martini has a diluting effect on the drink, perhaps this was Fleming's way of keeping Bond's head in the game, even as he sipped a famously stiff cocktail. The science behind this theory: When the martini is shaken, tiny bits of ice flake into the drink, and as they melt, the drink is diluted. (Also, bartenders usually slough off what's left in the stainless steel shaker, so maybe Bond was drinking less alcohol than we thought.)
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"Shaking will better remove very volatile organic compounds from the liquid [alcohol]," explains George Christou of the University of Florida, "and air oxidizes some of the other organic compounds present, affecting its taste." This is akin to letting red wine breathe before you serve it, he says. Christou also says some cheaper vodkas made from potatoes have some oil in them, and shaking will make an emulsion that will hide the oily taste — although it's hard to imagine Bond drinking cheap vodka.
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Sully's Dish