Category Archives

Season 4

Museums and the Mafia: The Secret History of Citrus

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A slice of lime in your cocktail, a lunchbox clementine, or a glass of OJ at breakfast: citrus is so common today that most of us have at least one lurking on the kitchen counter or in the back of the fridge. But don't be fooled: not only were these fruits so precious that they inspired both museums and the Mafia, they are also under attack by an incurable immune disease that is decimating citrus harvests around the world. Join us on a historical and scientific adventure, starting with a visit to the ark of citrus—a magical grove in California that contains hundreds of varieties you've never heard of, from the rose-scented yellow goo of a bael fruit to the Pop Rocks-sensation of a caviar lime. You'll see that lemon you're about to squeeze in a whole new light.

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Caffeine: The World’s Most Popular Drug

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A tablespoon of it will kill you, but most of us feel like death without it: we're talking about caffeine this episode. Inspired by a listener question — does green tea have more or less caffeine than black? and what about yerba mate? — Cynthia and Nicky explore the history and science of the world's most popular drug. Listen in as we discover the curious effect of birth control pills on how our bodies process it, calculate how much of an edge it gives athletes, and learn what dolphin dissection and the American Constitution have to do with each other, and with caffeine.

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The Maple Boom

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Many people only think of maple syrup at the breakfast table, when they're facing down a stack of hot, fluffy pancakes or some French toast. They're missing out. Maple is undergoing a major boom, newly ascendant in beverage aisles, Asian kitchens, and even biomedical research laboratories. In this episode, we visit sugar shacks and talk to the experts to find out why tree sap is so hot right now—and whether it can live up to the hype.

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First Foods: Learning to Eat

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How do we learn to eat? It may seem like an obvious question, but it's actually quite a complicated process. Who decided that mushed-up vegetables were the perfect first food—and has that always been the case? What makes us like some foods and hate others—and can we change? Join us to discover the back story behind the invention of baby food, as well as the latest science on flavor preferences and tips for how to transform dislikes into likes.

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The Food of Love

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Throughout history, humans have attributed aphrodisiac powers to certain foods, from legendary lover Casanova's diet of fifty oysters for breakfast to chocolate, the default Valentine's Day gift for the uninspired. But how did such varying vegetables as asparagus, potatoes, and Peruvian maca acquire this reputation—and do any of them actually deserve it? Join us to find out the history and science behind edible aphrodisiacs in this NSFW episode of Gastropod.

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The End of the Calorie

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For most of us, the calorie is just a number on the back of the packet or on the display at the gym. But what is it, exactly? And how did we end up with this one unit with which to measure our food? Is a calorie the same no matter what type of food it comes from? And is one calorie for you exactly the same as one calorie for me? To find out, we visit the special rooms scientists use to measure how many calories we burn, and the labs where researchers are discovering that the calorie is broken. And we pose the question: If not the calorie, then what?

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