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The Strange Science Behind Why Alcohol Burns

If you’ve ever taken a shot of alcohol, you know that it comes with certain unexpected consequences—the surprising heat you feel as the liquid slides down your gullet, for instance.

The folks over at SciShow recently tackled the “why” behind alcohol’s burn, and the answer is surprising. It all starts with a receptor known as VR1, contained in our mouths and throats. High temperature foods trigger VR1, which then tells our nerves and brain what’s going on, and results in a burning sensation.

Capsaicin, found in spicy foods, interacts directly with these receptors, as does alcohol ethanol, though in a different way. Ethanol just makes them more sensitive. Your VR1 receptors activate at about 107°F, but ethanol lowers that to just 93 degrees. See where this is going? Body temperature is normally around 98.6°F, so when you feel that burning sensation, it’s because your body itself is now beyond the threshold for those heat receptors.

As host Hank Green says in the video above: “The next time you take a shot and your eyes start watering, just remember it’s not the booze that’s hot, it’s you”—which just might be the best brainy pickup line of all time.

Images via iStock.

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The Latest Way to Enjoy Pho in Vietnam: As a Cocktail
James Duong, AFP/Getty Images
James Duong, AFP/Getty Images

Pho is something of a national dish in Vietnam. The noodle soup, typically topped with beef or chicken, can be enjoyed for breakfast, lunch, or dinner. There’s even a version of it for happy hour, as Lonely Planet reports.

The pho cocktail, served at Nê Cocktail Bar in Hanoi, contains many of the herbs and spices found in pho, like cinnamon, star anise, cilantro, and cardamom. Without the broth or meat, its taste is refreshingly sweet.

The drink's uniqueness makes it a popular choice among patrons, as does the dramatic way it's prepared. The bartender pours gin and triple sec through the top of a tall metal apparatus that contains three saucers holding the spices. He then lights the saucers on fire with a hand torch as the liquid flows through, allowing the flavors to infuse with the alcohol as the drink is filtered into a pitcher below.

The pho cocktail
James Duong, AFP/Getty Images

Pham Tien Tiep, who was named Vietnam’s best bartender at the Diageo Reserve World Class cocktail competition in 2012, created the cocktail six years ago while working at the famous French Colonial-era hotel the Sofitel Legend Metropole Hanoi, according to AFP. He has since brought his signature drink to several of the stylish bars he owns in Vietnam’s capital, including Nê Cocktail Bar.

Initially, he set out to create a drink that would represent Vietnam’s culture and history. “I created the pho cocktail at the Metropole Hotel, just above the war bunkers where the American musician Joan Baez sang to the staff and guests in December 1972 as bombs fell on the city,” Tiep told Word Vietnam magazine. “The alcohol in the cocktail is lit on fire to represent the bombs, while spices, such as chili and cinnamon, reflect the warmness of her voice.”

Tiep has a reputation for infusing his drinks with unusual local ingredients. He has also created a cocktail that features fish sauce, a popular condiment in Vietnam, and another that contains capsicum, chili, and lemongrass in an ode to the bo luc lac (shaking beef) dish, according to CNN.

[h/t Lonely Planet]

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Just 5 Alcoholic Drinks a Week Could Shorten Your Lifespan
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iStock

Wine lovers were elated when a scientific study last year suggested that drinking a glass of wine a day could help them live longer. Now a new study, published in The Lancet, finds that having more than 100 grams of alcohol a week (the amount in about five glasses of wine or pints of beer) could be detrimental to your health.

Researchers from the University of Cambridge and the British Heart Foundation studied the health data of nearly 600,000 drinkers in 19 countries and found that five to 10 alcoholic drinks a week (yes, red wine included) could shave six months off the life of a 40-year-old.

The penalty is even more severe for those who have 10 to 15 drinks a week (shortening a person’s life by one to two years), and those who imbibe more than 18 drinks a week could lose four to five years of their lives. In other words, your lifespan could be shortened by half an hour for every drink over the daily recommended limit, according to The Guardian, making it just as risky as smoking.

"The paper estimates a 40-year-old drinking four units a day above the guidelines [the equivalent of drinking three glasses of wine in a night] has roughly two years' lower life expectancy, which is around a 20th of their remaining life," David Spiegelhalter, a statistician at the University of Cambridge who was not involved with the study, tells The Guardian. "This works out at about an hour per day. So it's as if each unit above guidelines is taking, on average, about 15 minutes of life, about the same as a cigarette."

[h/t The Guardian]

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