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Filter Stories - Coffee Documentaries

Filter Stories - Coffee Documentaries

By: James Harper
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About this listen

Coffee stories with an extra shot of history and science. Filter Stories is a podcast revealing coffee’s hidden microscopic secrets, its powerful past, and how your choice of beans impacts tens of millions of people. See the behind-the-scenes stories on Instagram @filterstoriespodcast. If you haven’t already, please subscribe to the show and review us on Apple Podcasts and Spotify!Copyright James Harper Art Food & Wine Science World
Episodes
  • The hard business of selling beautiful coffee, part 2
    May 19 2025

    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 Spotify Follow me on Instagram and tag me in an Instagram story Write 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

    Show more Show less
    39 mins
  • The hard business of selling beautiful coffee, part 1
    May 19 2025

    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 1 unravels the hidden structures of Brazil’s coffee industry: how prices are set, why it’s so hard to create a specialty-focused farm, and why Vicente's farm is unsustainable if he sells his coffee the traditional way.

    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 Spotify Follow me on Instagram and tag me in an Instagram story Write 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

    Show more Show less
    29 mins
  • The Speed of Heat: How to roast more coffee, faster!
    Mar 24 2025

    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 Spotify Follow me on Instagram and tag me in an Instagram story Write 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

    Show more Show less
    52 mins
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