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At last, an episode on pizza! But that raises a tricky question: what exactly is pizza? As it turns out, the original pizzas from eighteenth-century Naples looked nothing like a standard slice—they were more like a focaccia, topped with oil, herbs, anchovies, or whatever else was on hand. Even after these first pizzas met the tomato, the dish was a local peculiarity—most Italians thought pizza was gross and weird until just a few decades ago. So how did we get from Neapolitan subsistence snack to today's delivery staple? Listen in this episode as we travel with historian Carol Helstosky,…

Gastropod

by Cynthia Graber and Nicola Twilley · English · Food & Cooking

Food with a side of science and history. Every other week, co-hosts Cynthia Graber and Nicola Twilley serve up a brand new episode exploring the hidden history and surprising science behind a different food- or farming-related topic, from aquaculture to ancient feasts, from cutlery to chile peppers,

More from Gastropod

  1. 2 Dec 2025 · 51 min

    Forget Plain Vanilla: You'll Never See The World's Favorite Flavor the Same Way Again

    Today, 'vanilla' often means boring, and yet the edible seedpod of this Central American orchid is one of the most expensive spices in the world, not to mention one of the most popular flavors globally. So how did this coveted bean get such a ho-hum reputation? Listen in this episode as Gastropod travels to vanilla's homeland in the highlands of Veracruz, Mexico, to investigate. It's a tale of botanical piracy, beaver butts, and ice-cream barges, in which an ingenious enslaved tween and the product of pulp paper waste combine to transform vanilla from a complex and sophisticated elite treat…

  2. 18 Nov 2025 · 51 min

    From Fountain of Youth to Fruit on the Bottom: How Yoghurt Finally Made it Big in America

    Yoghurt is the most diverse section of the dairy case: from Icelandic skyr to creamy Australian, and fruity French Yoplait to full-fat Greek. With something to suit every palate, plus a dose of microbes to support healthy digestion, yoghurt is a staple food in the US, hero of a million smoothies, berry bowls, and snack breaks every day. Which is why it's pretty weird that, until about 50 years ago, most Americans had no idea what it was. This episode, we've got the story of the microbial miracle (and ants?) that gave us yoghurt, as well as the secret connection between those heat-loving…

  3. 4 Nov 2025 · 48 min

    Yes, You Really Can Make Food From Thin Air—And We Tried It

    Every second of every day, plants on earth do something miraculous: they take the carbon dioxide from air and turn it into food. With very few exceptions, everything we eat starts out that way. But what if we wanted to cut out the middlemen, re-wild all those fields full of wheat and corn, and manufacture dinner directly from the atmosphere ourselves? Scientists began dreaming of turning air into food back into the 1800s, but it's only recently that dream has become a reality—with results that, depending on where you live, you can already taste for yourself. In this episode, we’re exploring…

  4. 7 Oct 2025 · 48 min

    Everything You Know About Metabolism Is Wrong

    If you’ve heard of metabolism, you’ve probably heard endless tips and tricks to boost it, from working out to drinking green tea. The idea is that a slow metabolism leads to weight gain, and speeding it up makes it easier to shed pounds. But what if we told you that metabolic rate doesn't really have anything to do with why so many of us in the developed world are heavy? This episode, nutrition scientist Kevin Hall and science journalist Julia Belluz join us to debunk metabolic myths, starting with what actually happened behind the scenes on the reality TV show The Biggest Loser. Can you…

  5. 23 Sep 2025 · 51 min

    Durian Delight and Feijoa Fun: Adventures in Banned, Forgotten, and Unusual Fruit

    This week on Gastropod, a feast of fruits! Specifically, feijoa and durian—and, if you haven’t heard of either, you’re not alone. Unlike the ubiquitous strawberry or banana, durian and feijoa are only popular in a handful of countries and almost unknown in the US, and we wanted to know why—especially because the people who love them really love them. For New Zealanders, like journalist Kate Evans, feijoa is *the* taste of home, even though it's almost forgotten in its original homeland, in Brazil and Uruguay. Meanwhile, the smell of the durian is so intense and distinctive—Julia Child…

  6. 9 Sep 2025 · 43 min

    Talking Taco

    Whether or not it's Tuesday, tacos pretty much always hit the spot—and not just in their homeland in Mexico. These days, the taco can be found all over the world, although it's acquired some strange new fillings along the way, from French fries to canned corn. It's hard to imagine something so universal having to be invented—but, in fact, the taco as we know it only emerged in the 1800s. In this episode, Gastropod talks taco with the experts, peering through the salsa-smudged veil of history to answer such questions as: What do Cornish miners and their lunchtime pasties have to do with the…

  7. 6 Oct 2026 · 52 min

    Fibermaxxing FTW: Meet the Neglected Nutrient That's the Key to Health

    Move over protein, it's time to fibermaxx! Fiber has always been the neglected stepchild of nutrients: it's never been seen as essential, and some of its earliest enthusiasts were poop-obsessed oddballs. Take the inventor of cornflakes, John Harvey Kellogg. Inspired by the gorillas he saw at the zoo, he was fiber's first popular champion—but he also went around making people sniff his own perfect poops, and he believed that eating a plant-based, fiber-heavy, and condiment-free diet would help achieve his goal of reducing masturbation. It wasn't until surprisingly recently that scientists…

  8. 22 Sep 2026 · 48 min

    Eat Bison to Save Bison

    For tens of thousands of years, North America was bison country. Millions of these giant, shaggy animals—also known as buffalo—roamed from the far north to the Gulf and from the east coast to the west. They defined the land and its people: the animals provided food, clothing, and spiritual connection to the continent's Indigenous peoples—while their hooves, wallows, and dung patties shaped the prairie, providing essential habitat for plants, birds, amphibians, and more. But by the late 1800s, the bison had nearly been driven extinct. Today, cattle have largely taken their place, with huge…

  9. 8 Sep 2026 · 49 min

    Plant Milk Proliferation: Oat, Soy, Almond, and More, But Which Is Best?

    Cow milk is out, and plant milk reigns supreme. At least, that's how it feels in the supermarket these days, where the refrigerated section is full of "milk" made from oats, almonds, peanuts, coconuts, soy, macadamia nuts, pistachios, and even peas, with new plants being milked seemingly every day. But this proliferation had us wondering: who invented all these plant milks, and are they better for us and the planet than the OG cow-based beverage? To find out, we're exploring the surprisingly long history of plant-based milks—including why most civilizations preferred them over any animal's,…

  10. 18 Aug 2026 · 48 min

    So Hot Right Now: Why We Love the Chile Pepper

    Perhaps no other plant is as entwined with pain and pleasure as the chile pepper. But why does it burn—and why on earth do we crave that uncomfortable sensation? How did capsaicin's fungus-fighting, digestion-enhancing, and adrenaline-triggering powers convince early hunter gatherers in South America to fall in love with the chile's tiny berry ancestors, and then European colonists to spread chiles around the world? Plus, new insights into the rise of the “superhots,” chilehead competitions, and a murder-by-Carolina-Reaper attempt right here on team Gastropod. Who survived to tell the tale?…

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