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Filter Stories - Coffee Documentaries

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.

Podcast · By James Harper · English · Official site

Indexed episodes, last 90 days
9
Latest publication
Aug 24, 2026
Audience
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Earliest in this view
Jul 27, 2026
The latest indexed work is over 30 days old. There may be a gap in what we hold.

Latest episodes

  1. Episode · Aug 24, 2026

    Producer Toolkit: Fermentation, Pt 3 - Is using yeast cheating? And who decides? (opens the original)

    Episode notes · Positive tone

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    This episode explores why 30 cents a kilo is trivial for a large farm and unaffordable for a small one, the strange power imbalance that lets roasters define quality when nobody asks a winemaker what yeast they used, and how producers can talk to buyers who think starter cultures are cheating. Part of The Coffee Producer Toolkit, a series made in collaboration with Lucia Solis, it will help you understand coffee farming better than most professionals you'll meet at a trade show. Each episode tak

  2. Episode · Aug 24, 2026

    Producer Toolkit: Fermentation, Pt 2 - The case for avoiding exciting fermentations (opens the original)

    Episode notes · Positive tone

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    This episode explores why the specialty industry's obsession with exotic processing is a dangerous signal for farmers, five ways commercial microbes can make a farm more money, and what a well-run fermentation looks like on farms of very different sizes. Part of The Coffee Producer Toolkit, a series made in collaboration with Lucia Solis, it will help you understand coffee farming better than most professionals you'll meet at a trade show. Each episode takes one part of the farming business — ag

  3. Episode · Aug 24, 2026

    Producer Toolkit: Fermentation, Pt 1 - Nature's lottery and coffee's 3,000-year lag (opens the original)

    Episode notes · Positive tone

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    This episode explores why coffee is only fifteen years into a fermentation revolution that wine and bread went through millennia ago, what's actually happening inside the tank when microbes multiply into billions on their own, and why farmers who used to ferment as fast as possible are now trying to do the opposite. Part of The Coffee Producer Toolkit, a series made in collaboration with Lucia Solis, it will help you understand coffee farming better than most professionals you'll meet at a trade

  4. Episode · Aug 9, 2026

    Producer Toolkit: Processing, Pt 3 - Critical instruments and poisoned rivers (opens the original)

    Episode notes · Positive tone

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    This episode explores how just a handful of cheap instruments can ensure quality is reproducible year-on-year, and the wastewater crisis poisoning rivers behind picture-perfect coffee farms. Part of The Coffee Producer Toolkit, a series made in collaboration with Lucia Solis, it will help you understand coffee farming better than most professionals you'll meet at a trade show. Each episode takes one part of the farming business — agronomy, processing, fermentation, storage, quality, sales — and

  5. Episode · Aug 9, 2026

    Producer Toolkit: Processing, Pt 2 - Drying mistakes that ruin coffee quality (opens the original)

    Episode notes · Positive tone

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    This episode explores the simple drying mistakes that compromise months of careful work, and the low-cost fixes that protect a coffee's shelf life and flavour. Part of The Coffee Producer Toolkit, a series made in collaboration with Lucia Solis, it will help you understand coffee farming better than most professionals you'll meet at a trade show. Each episode takes one part of the farming business — agronomy, processing, fermentation, storage, quality, sales — and lays out what the best farms ar

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