More than a century ago, enterprising manufacturers added brand-new chemical preservatives into food to keep it fresh as it traveled from the farm into rapidly growing American cities. Milk no longer went rancid! Meat no longer spoiled! But some scientists wondered: could all these preservatives be doing more harm than good? It took a crusading chemist named Harvey Washington Wiley to take this the fight all the way to Washington, D.C., where he recruited a “poison squad” to test their health effects—and, in the process, created the nation’s first law to protect against poisons in our food supply. But did he succeed? Are the preservatives we eat today safe? Listen to this episode to hear Wiley’s story—and learn why some of the chemicals he tested are still in our food today.
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Keeping it Fresh: Preservatives and The Poison Squad

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.

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Americans eat more shrimp than any other seafood: on average, each person in the US gobbles up close to six pounds of the cheap crustaceans every year. We can eat so many of these bug-like shellfish because they’re incredibly inexpensive, making them the stars of all-you-can-eat shrimp buffets and single-digit seafood deals. But we've got bad news: this is one bargain that's too good to be true. More than 90 percent of the shrimp we eat comes from overseas, where looser regulations lead to horrific labor abuses, environmental destruction, and the use of banned chemicals and antibiotics—all while American shrimpers struggle to survive. This episode, we’re exploring the history of how shrimp went from a fancy delicacy to buffet bargain (yes, Forrest Gump is involved), plus what to do if you want to enjoy everybody's favorite seafood with a clear conscience. Hold the cocktail sauce: this episode will change how you look at your favorite appetizer forever.
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All You Can Eat: The True Story Behind America's Most Popular Seafood

If we at Gastropod were asked to name a perfect food, the oyster would be at the top of our list. Oysters are pretty much always our answer to the question of what we'd like to eat this evening—but are they also the answer to the slow-motion disaster of disappearing coastlines worldwide? Join us this episode as we discover how this magical mollusk contains a pearl of hope in the fight to counter rising sea-levels, prevent erosion, and buffer storm surges everywhere from hurricane-hit New Orleans to New York City's flood-prone fringes. But be prepared: you just might join the ranks of the oyster obsessed.
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The World Is Your Oyster: How Our Favorite Shellfish Could Save Coastlines Worldwide

This episode, we've got the exclusive on the preliminary results of the world's largest personalized nutrition experiment. Genetic epidemiologist Tim Spector launched the study, called PREDICT, to answer a simple but important question: do we each respond to different foods differently? And, if so, why? How much of that difference is genetic, how much is due to gut microbes, and how much is due to any one of the dozens of other factors that scientists think affect our metabolic processes? You’ve heard of personalized medicine, will there be such a thing as personalized diets? And should there be? Can teasing out the nuances of how each individual body processes different foods make us all healthier? To find out, we signed ourselves up as study participants, sticking pins in our fingers, weighing our food, and providing fecal samples, all for science—and for you, dear listeners. Listen in now as we take part in this ground-breaking study, discover our own differences, and find out the early results! (Encore episode)
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Eat This, Not That: The Surprising Science of Personalized Nutrition (encore)

If "Cajun-style" only makes you think of spicy chicken sandwiches and popcorn shrimp, you need to join us in the Big Easy this episode, to meet the real Cajun flavor. Cajun cuisine and its close cousin, Creole, were born out of the unique landscape of the Mississippi River delta, whose bounty was sufficient to support large, complex Indigenous societies, without the need for farming or even social hierarchies, for thousands of years. Europeans were slow to appreciate the wealth of this waterlogged country, but, as waves of French, Spanish, and American colonists and enslaved Africans arrived in Louisiana and the port of New Orleans, they all shaped the food that makes it famous today. But it would take a formerly enslaved woman turned international celebrity chef, a legendary restaurant that's hosted Freedom Riders, U.S. presidents, and Queen B, and a blackened redfish craze to turn Louisiana's flavorsome food into a global trend. Come on down to the bayou this episode, as we catch crawfish and cook up a storm to tell the story of how Cajun and Creole flavors ended up on home-cooking shows, in Disney movies, and at drive-throughs nationwide.
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Bam! How Did Cajun Flavor Take Over the World?

After Dan’s pasta shape, cascatelli, was launched, people everywhere were cooking with it and sending him photos of what they were making. As exciting as that was, he was disappointed that most folks were only making a handful of well-worn dishes with this new shape. So Dan decided to write a cookbook to show the world that there’s so much more you can and should be putting on all your pasta shapes, cascatelli and beyond! There’s only one problem: he’s never written a recipe in his life. In this four-part series, Dan shares the inside story of creating his first cookbook, Anything’s Pastable — from the highs and lows of recipe testing, to a research trip across Italy, to the agonizing decisions over the design of the cover. Listen to this special guest episode of The Sporkful now.
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Keeping it Fresh: Preservatives and The Poison Squad

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