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Gastropod

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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, and from microbes to Malbec. We interview experts, visit labs, fields, and archaeological digs, and generally have lots of fun while discovering new ways to think about and understand the world through food. Find us online at gastropod.com, follow us on Twitter @gastropodcast, and like us on Facebook at facebook.com/gastropodcast.

Latest episodes

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

6 Oct 2026 · 51 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 pra

22 Sep 2026 · 48 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

8 Sep 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 chile

18 Aug 2026 · 48 min
Salad Days: A Story of Science, Sexism, and Jell-O

If leafy greens and a little vinaigrette is salad, and chicken with mayo is salad, and vegetables in Jello-O are ALSO salad… What exactly is salad?! That's the big question we're tackling this episode—and it takes us down some unexpected rabbit holes. Listen in now to hear how ‘scientific housekeeping’ and good-old-fashioned sexism made salad into women’s food, and how this led to boiled cucumbers

4 Aug 2026 · 44 min
Where There's Smoke, There's...Whiskey, Fish, and Barbecue!

As anyone who’s spent time by a crackling campfire or a barbecue pit can attest, the scent of smoke is unmistakable—and surprisingly mysterious. Smoke clings to clothing but vanishes in the breeze. You see it, but you can’t hold it. It’s fantastic in whiskey and terrible in toast. So what exactly is smoke—and what does it do to our food and drinks? What’s the difference between cold and hot smoked

21 Jul 2026 · 51 min
America's Forbidden Fruit and Forgotten First Soda: Ask Gastropod

Fan favorite Ask Gastropod is back, and we’re celebrating the season by solving a pair of trans-Atlantic mysteries! First up: if you have a purple candy in Europe, it’s nearly guaranteed to be flavored with a tart little berry called blackcurrant—while the same color candy in the US is almost always grape. One intrepid Gastropod listener wanted to know: why the difference? We’ve got the story of h

7 Jul 2026 · 50 min
Bringing Home the Bacon: From Shakespeare to the Baconator

For many Americans, bacon is an essential element of the perfect breakfast—not to mention a welcome addition to everything from cheeseburgers to doughnuts. But bacon hasn't always been beloved. Ancient Egyptians elites looked down on pork, Judaism and Islam banned it entirely, and in Shakespeare’s time, calling someone “bacon brains” was a serious insult. So how did we go from bacon shaming to tod

23 Jun 2026 · 48 min
What the Shell? Cracking the Lobster's Mysteries

Consider the lobster roll: tender chunks of lobster bathed in butter or mayo, sandwiched between two slices of a squishy bread roll… Have we caught your attention yet? Lobster is a summertime staple in New England, a fixture on casino and cruise ship buffets, and a steady partner for steak in the classic surf 'n' turf. Today, the American lobster industry is the single most valuable fishery in the

9 Jun 2026 · 44 min
A Dog's Dinner: What Should We Really Be Feeding Our Pets?

In millions of homes, humans aren’t the only creatures sitting down to dinner. So what's on the menu for pets—and what impact does it have on their health, as well as the environment? This episode, we go back thousands of years to figure out what our first furry friends ate, how that's changed over the years, and why. Is serving your dog raw meat and bones more ancestrally appropriate? Can cats be

19 May 2026 · 50 min
Feel the Beet: The Most Fascinating Woman You've Never Heard Of

For those who like its earthy flavor, the humble beet can do a lot for a salad or a soup. But could it help end slavery? In the 1800s, one woman believed it could—and she wasn't just any old woman. This episode, meet Lydia Maria Child, who wrote the first children's periodical magazine, the first New England historical novel, and one of America's first successful self-help books—all before she tur

5 May 2026 · 44 min
White vs. Wheat: The Food Fight of the Centuries

White or whole wheat: while today the question is most frequently asked at the sandwich counter, the debate over the correct answer goes back literally thousands of years. This episode, we dive into the world's longest-running, highest-stakes food fight. Along the way: the invention of sliced bread, the science behind Wonder Bread's curious bounce, and a light dusting of eugenics. Will either win

21 Apr 2026 · 52 min
Protein, Pyramids, and Politics: The Forgotten Stories and Controversial Science Behind Government Dietary Advice

ICYMI, our old friend the food pyramid has been flipped on its head. The Trump administration recently issued new dietary guidelines that it says will "revolutionize our nation's food culture." It's a bold claim—but since when has the government been in the business of telling us what to eat in the first place? How does it know how much of each nutrient will keep us healthy, and why are all the di

7 Apr 2026 · 55 min
Sushi's Extraordinary Evolution: From Pickle to Primetime

Sushi is everywhere these days—in grocery stores and gas stations, at buffets and birthday parties, in Europe and Latin America and all over the United States. This popularity is especially astonishing when you remember that, just a few decades ago, the idea of eating nuggets of raw fish and rice seemed bizarre, intimidating, and even a little gross to most non-Japanese people. Even more surprisin

24 Mar 2026 · 45 min
SNAP To It! Why Food Stamps Matter To All of Us—And Why They're Under Threat

SNAP—the federal assistance program better known as food stamps—helps put food on the table of nearly one in eight Americans today. But, as new legislation is phased in over the coming months, more than half of those people are expected to lose some or all of their SNAP benefits. This episode, we're getting to the bottom of why SNAP matters—to all of us, not just those who receive it. Why does the

10 Mar 2026 · 46 min
When is a Pancake Not a Pancake?

We aren't afraid to ask the big questions here at Gastropod, such as: what exactly is a pancake? If you think you know the answer, prepare to have your mind blown. It turns out the sweet, syrup-covered stack of American breakfast fame are far from the only members of the pancake family—and there are some truly controversial cakes in the wider pan family. Speaking of controversy: if you've made ins

24 Feb 2026 · 45 min
OXO, Cuisinart, and Julia Child: The Secret (Accessible) History Behind Your Kitchen

For many people with disabilities, the kitchen can seem a deeply unfriendly place. From counters that require users to stand and cabinets that are often out of reach, to ovens that can’t be opened in mobility chairs and tools that are hard to grip or difficult to read—cooking can seem like an impossible challenge. But it doesn’t have to be this way. In fact, since the mid-1900s, researchers, desig

10 Feb 2026 · 51 min
Ripe for Global Domination: The Story of the Avocado

We’re coming up to AvocadoFest 2026, otherwise known as the Super Bowl, when Americans get fully a fifth of their annual avocado allocation. But how did this humble fruit, originally named after testicles, get from its Mexican forest home to a tattoo on Miley Cyrus's upper arm? This episode, we unravel the avocado's amazing journey, a story that involves not only conquistadors and cartel violence,

27 Jan 2026 · 46 min
Canned Tomatoes and the Myth of the San Marzano

Canned tomatoes are a perfect winter food. As you'll know from our tomato episode , the beautiful fruits in fresh aisle of the supermarket are mostly flavorless outside of the summer season—but the tomatoes that get packed in a can are cheap, readily available, and, most importantly, delicious year-round. This episode, we have the stories of how turtle poop, full English fry-ups, and an Italian ro

13 Jan 2026 · 50 min
Is Your Cinnamon Fake? Where Does Kefir Come From? Plus: Why Is Citric Acid In Everything? Ask Gastropod!

The season for holiday baking is upon us, and before you spice up your cookies and pies, you’ll probably want to know: is most of the cinnamon on grocery store shelves actually fake? That’s one question we’re investigating this week on behalf of you, dear listeners, in the latest installment of our popular Ask Gastropod series! This episode, we've got the scoop on what's real when it comes to cinn

16 Dec 2025 · 42 min