Filter Stories - Coffee Documentaries

Specialty coffee changes the story for the indigenous people of Guatemala. Coffee as a tool of oppression finally offers hope....and then something a bit more complicated. This episode explores the tension between the values of the Mayan communities who grow coffee, and the values that drive the specialty coffee movement. Many of the signals we typically look for in our coffees - super-specialty flavours, Fairtrade certification, “5th generation family farm” - might actually exclude coffee grown by indigenous Guatemalans. This episode might change what kind of Guatemalan coffee you buy. Please spread the word about A History of Coffee! Follow us on Instagram - James (@filterstoriespodcast) and Jonathan (@coffeehistoryjm) - and tag us in an Instagram story. Write a review on Apple Podcasts Leave a 5 star rating on Spotify This free educational content for the coffee community was made possible by Mahlkönig, manufacturers of world-leading coffee grinders for 100 years for your home and cafe. Read Jonathan’s book, Coffee: A Global History Support James’ work directly by buying him a coffee at Ko-fi.com/FilterStories Read James’ article on Dieseldorf, the famous German plantation owner, in Standart Pick up a copy of Prof. Ted Fischer’s excellent book Making Better Coffee: How Maya Farmers and Third Wave Taste Makers Create Value Follow Juan Jose on LinkedIn to keep up with his PhD on coffee farming in Jacaltenango exploring how ecology, generational memory and ritual all shape how Jacalteco farmers tend the land. Check out Standart, the award-winning coffee magazine. Get a free magazine and a free bag of coffee by clicking here.Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. See the Mikafi countertop roaster at the Thermoplan stand (6637) at World Of Coffee Brussels. Not attending? See it here.What does the Marco MilkPal look like to you? WALL-E? Something Steve Jobs would be proud of? Check it out here."Seize the Moment", the tabletop device from DiFluid that guides your customers through their coffee as it cools. Use code FILTER and this link to get 10% off.

When you buy a bag of coffee labelled fifth-generation family farm, it feels like a good choice. But in Guatemala, that label might actually be a signal for a more uncomfortable truth. This episode explores how land has been understood, used, and eventually fought over in Guatemala for centuries between indigenous people, Europeans and those in-between. It’s a story of what happened immediately after Guatemala won independence from Spain. This pivotal period of history gets less attention in the history books, but the suffering of the indigenous people of Guatemala gets arguably even worse. Fair warning: it's a dark story, and it will make you think twice about what you're really choosing when you pick up a bag of coffee from Central America. Please spread the word about A History of Coffee! Follow us on Instagram - James (@filterstoriespodcast) and Jonathan (@coffeehistoryjm) - and tag us in an Instagram story. Write a review on Apple Podcasts Leave a 5 star rating on Spotify This free educational content for the coffee community was made possible by Mahlkönig, manufacturers of world-leading coffee grinders for 100 years for your home and cafe. Read Jonathan’s book, Coffee: A Global History Support James’ work directly by buying him a coffee at Ko-fi.com/FilterStories Read James’ article on Dieseldorf, the famous German plantation owner, in Standart Pick up a copy of Prof. Ted Fischer’s excellent book Making Better Coffee: How Maya Farmers and Third Wave Taste Makers Create Value Follow Juan Jose on LinkedIn to keep up with his PhD on coffee farming in Jacaltenango exploring how ecology, generational memory and ritual all shape how Jacalteco farmers tend the land. Check out Standart, the award-winning coffee magazine. Get a free magazine and a free bag of coffee by clicking here.Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. See the Mikafi countertop roaster at the Thermoplan stand (6637) at World Of Coffee Brussels. Not attending? See it here.What does the Marco MilkPal look like to you? WALL-E? Something Steve Jobs would be proud of? Check it out here."Seize the Moment", the tabletop device from DiFluid that guides your customers through their coffee as it cools. Use code FILTER and this link to get 10% off.

Water massively impacts your coffee’s flavours. But most of us struggle to fix our water because water science is confusing… …until now! In this special collaboration with Lucia Solis (Making Coffee podcast), I guide her through the two most important concepts you need to understand to get great-tasting water for coffee: hardness and alkalinity. We go step-by-step through: • Why these concepts matter for coffee flavour and equipment • How to test your water at home • How to fix it, depending on what you’re working with These aren’t one of my usual narrative episodes—they’re a straightforward, practical guide to help you take control of your water. By the end of these episodes, you’ll be able to say: “I know what good water for coffee is and how to get it”. I hope it helps you as much as it helped Lucia. Check my website for all the visuals mentioned in this episode, including: SCA graph for excellent water (the “map”) Map of different water hardness across Paris My Berlin water report The nightmarish table of conversions… Results from my water tests in my Berlin studio Bottled water brands rated for their hardness and alkalinity Please spread the word about The Science of Coffee!Leave a 5 star rating on SpotifyFollow me on Instagram and tag me in an Instagram storyWrite a review on Apple Podcasts Discover how I make these Filter Stories episodes by subscribing to my Substack newsletter Resources mentioned in the episode: SCA’s Water Quality Handbook Hardness and alkalinity dripper testing kit (also good for keeping your fishies happy) BWT Penguin Filter Jug (what I used to use with the magnesium cartridges) BWT BestAqua ROC (what now I use) BWT BestBarista (for cafes) Create your own water by adding minerals to very soft or distilled water: JoJo Hersh’s simple calculator using epsom salts and bicarbonate of soda, and Barista Hustle’s more elaborate one. Want to go deeper into water chemistry? BWT White Paper on the effects of magnesium (German)Christopher Hendon’s book Water for CoffeeDo an online Certificate of Advanced Studies at the Coffee Excellence Centre Read The Craft and Science of CoffeeBarista Hustle's Water courseSome water content on YouTube by James Hoffman and Lance Hedrick Season 3 of The Science of Coffee is made possible by these leading coffee organisations: The Coffee Quest | BWT | TODDY | Algrano | Probat Check out Standart, the award-winning coffee magazine. Get a free magazine and a free bag of coffee by clicking here.Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. See the Mikafi countertop roaster at the Thermoplan stand (6637) at World Of Coffee Brussels. Not attending? See it here.What does the Marco MilkPal look like to you? WALL-E? Something Steve Jobs would be proud of? Check it out here."Seize the Moment", the tabletop device from DiFluid that guides your customers through their coffee as it cools. Use code FILTER and this link to get 10% off.

Every time we open a bag of beautiful specialty coffee — like Erick Bravo’s from Finca El Chaferote in Huila, Colombia — we’re drinking something that’s been on a long journey. And I mean long! Over 1500 kilometers north up and down the Andes mountain range, a distance more than twice the height of France. Along the way, it passes through dozens of hands, machines, and decisions. We follow it through muddy mountain sides, dusty dry mills, and hurricane-battered coastal warehouses — places where all kinds of things can go wrong. A leaky roof. An overly aggressive polishing machine. Or even theft. But here’s the mystery: getting Erick’s coffee to port costs 50% more than sending a commodity coffee through the same route. Why? That question led me deep into Colombia’s coffee supply chains — and what I found changed how I think about the real cost of treating coffee with care. Please spread the word about The Science of Coffee!Leave a 5 star rating on SpotifyFollow me on Instagram and tag me in an Instagram storyWrite a review on Apple Podcasts Discover how I make these Filter Stories episodes by subscribing to my Substack newsletter Find your next favourite Colombian coffee from The Coffee Quest Taste coffees from Erick Bravo’s award winning farm, Finca El Chaferote, and follow him on Instagram. Season 3 of The Science of Coffee is made possible by these leading coffee organizations: The Coffee Quest | BWT | TODDY | Algrano | Probat Check out Standart, the award-winning coffee magazine. Get a free magazine and a free bag of coffee by clicking here.Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. See the Mikafi countertop roaster at the Thermoplan stand (6637) at World Of Coffee Brussels. Not attending? See it here.What does the Marco MilkPal look like to you? WALL-E? Something Steve Jobs would be proud of? Check it out here."Seize the Moment", the tabletop device from DiFluid that guides your customers through their coffee as it cools. Use code FILTER and this link to get 10% off.

Volume. Cheap. Lame flavours. This is the traditional way of growing coffee in Brazil, and almost every farm does it this way. But what if you wanted to produce beautiful, distinctive flavours instead—and make a living from it? In this episode, we travel to Fazenda Paraíso in Minas Gerais, Brazil, where farmer Vicente Pereira and his daughter are on a steep learning curve finding buyers for their beautiful coffees. Part 2 explores what it looks like for a small Brazilian farm to find better buyers, and the challenge of achieving pricing power. Behind every beautiful coffee is a family story like this, but it’s a story we rarely get to see close up. Let’s take a closer look. Please spread the word about The Science of Coffee!Leave a 5 star rating on SpotifyFollow me on Instagram and tag me in an Instagram storyWrite a review on Apple Podcasts Discover how I make these Filter Stories episodes by subscribing to my Substack newsletter Source your next lot of specialty green coffee on Algrano Listen to Firefly to hear a cautionary tale about a specialty farm failing because they couldn't find the right buyers. Try Fazenda Paraiso's and Sancoffee's coffees for yourself! Season 3 of The Science of Coffee is made possible by these leading coffee organizations: The Coffee Quest | BWT | TODDY | Algrano | Probat Check out Standart, the award-winning coffee magazine. Get a free magazine and a free bag of coffee by clicking here.Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. See the Mikafi countertop roaster at the Thermoplan stand (6637) at World Of Coffee Brussels. Not attending? See it here.What does the Marco MilkPal look like to you? WALL-E? Something Steve Jobs would be proud of? Check it out here."Seize the Moment", the tabletop device from DiFluid that guides your customers through their coffee as it cools. Use code FILTER and this link to get 10% off.

To roast coffee faster, you need to turn up the heat….right? No! In this episode, we explore the three powerful methods of heat transfer that revolutionised roasting. We’ll journey from humble beginnings—when roasting three kilos took half an hour—to machines that now roast hundreds of kilos of coffee in the time it takes you to boil a kettle. But beans roasted at lightning speed look strange, and taste… well, you’ll find out. Join us as we test-drive an industrial tangential roaster where first crack remind me of fireworks crackers. We also see the whale-sized roaster so massive it’s worth you a Guinness World Record. We have the technology today to roast coffee faster than ever, so why aren’t we all roasting at recording-breaking speeds? --------------- Please spread the word about The Science of Coffee!Leave a 5 star rating on SpotifyFollow me on Instagram and tag me in an Instagram storyWrite a review on Apple Podcasts Discover how I make these Filter Stories episodes by subscribing to my Substack newsletter Check out the Probat roasters mentioned in this episode: Emmerich Spherical Roaster - "Pink Hydrant" Large ball roaster - “Sputnik in a pizza oven” G45 early drum roaster - “Old school steam train” Early tangential roaster Sample tangential roaster - "Shoebox" Neptune 4000, the largest drum roaster in the world! - "The whale" And there are lots of other specialty roasters from Probat I didn't have time to showcase, including their new hydrogen powered roasters. See them all for yourself!. Theodor von Gimborn's wikipedia page Go deeper into the science of roasting Read Mark Al-Shemmeri’s coffee roasting blog Do a Certificate of Advanced Studies with the Coffee Excellence Centre Explore Barista Hustle's online roasting learning Learn more from Morten Münchow and his coffee roasting courses Read Morten’s paper in collaboration with the University of Copenhagen on Roasting Conditions and Coffee Flavour Follow Filter Stories on Instagram for my infographics Learn more about first crack on my episode Coffee Roasting, Part 1: How heat transforms coffee beans Season 3 is made possible by these leading coffee organizations: The Coffee Quest | BWT | TODDY | Algrano | Probat Check out Standart, the award-winning coffee magazine. Get a free magazine and a free bag of coffee by clicking here.Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. See the Mikafi countertop roaster at the Thermoplan stand (6637) at World Of Coffee Brussels. Not attending? See it here.What does the Marco MilkPal look like to you? WALL-E? Something Steve Jobs would be proud of? Check it out here."Seize the Moment", the tabletop device from DiFluid that guides your customers through their coffee as it cools. Use code FILTER and this link to get 10% off.

When I started making cold brew this last year, I treated it like hot brew filter coffee. But no matter how I adjusted the grind or tweaked the brew time, I hardly got any differences in flavor… Then it hit me: cold brew isn’t just a slower hot brew—it’s a completely different game with its own rules! In this episode, I speak with leading coffee researchers who break down the microscopic dance between water and coffee that explains why cold brew plays by its own playbook. And I bring you in on the brewing secret that can turn your brews from fruit juice to nutty creaminess. --------------- Please spread the word about The Science of Coffee!Leave a 5 star rating on SpotifyFollow me on Instagram and tag me in an Instagram storyWrite a review on Apple Podcasts Discover how I make these Filter Stories episodes by subscribing to my Substack newsletterExplore TODDY’s cold brewing kits Go deeper into the science of cold brew Do a Certificate of Advanced Studies with the Coffee Excellence Centre Read Jiaxin (Jessie) Liang’s equilibrium extraction SCA 25 article and her published article Discover all of UC Davis' cold brew research through the Coffee Science Foundation Learn how to do a cold brew cupping with Toddy Follow Filter Stories on Instagram for my infographics Season 3 is made possible by these leading coffee organizations: The Coffee Quest | BWT | TODDY | Algrano | Probat Check out Standart, the award-winning coffee magazine. Get a free magazine and a free bag of coffee by clicking here.Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. See the Mikafi countertop roaster at the Thermoplan stand (6637) at World Of Coffee Brussels. Not attending? See it here.What does the Marco MilkPal look like to you? WALL-E? Something Steve Jobs would be proud of? Check it out here."Seize the Moment", the tabletop device from DiFluid that guides your customers through their coffee as it cools. Use code FILTER and this link to get 10% off.

We’re back with another series of The Science of Coffee—and this time we’re diving even deeper into coffee’s hidden microscopic secrets! Over the past year, narrative audio producer and coffee professional James Harper has scoured academic journals, ventured deep into coffee farms, and conducted bold tasting experiments. Now, he’s weaving those discoveries into captivating audio stories that reveal why coffee tastes the way it does—and how we can make it taste even better. In this new series, you’ll learn about cold brew extraction science, explore innovations in roasting, and follow the shifting business models that shape farmers’ livelihoods. You’ll also take a journey through commodity vs. specialty supply chains and examine the historical, sociological, and philosophical perspectives that define what “specialty coffee” truly means. Press the “Subscribe” button so you don’t miss an episode! https://bit.ly/3TdDnHO For more coffee science and behind-the-scenes content, follow James on Instagram @filterstoriespodcast. https://bit.ly/2Mlkk0O The Science of Coffee is a spin-off series from James Harper’s documentary podcast, Filter Stories. https://bit.ly/3ajoT5e Season 3 is made possible by these leading coffee organizations: The Coffee Quest | BWT | TODDY | Algrano | Probat Check out Standart, the award-winning coffee magazine. Get a free magazine and a free bag of coffee by clicking here.Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. See the Mikafi countertop roaster at the Thermoplan stand (6637) at World Of Coffee Brussels. Not attending? See it here.What does the Marco MilkPal look like to you? WALL-E? Something Steve Jobs would be proud of? Check it out here."Seize the Moment", the tabletop device from DiFluid that guides your customers through their coffee as it cools. Use code FILTER and this link to get 10% off.