Filter Stories - Coffee Documentaries27 Jan 2025

Introducing: Season 3 of The Science of Coffee

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://link.filterstories.org/3TdDnHO

For more coffee science and behind-the-scenes content, follow James on Instagram @filterstoriespodcast.

https://link.filterstories.org/2Mlkk0O

The Science of Coffee is a spin-off series from James Harper’s documentary podcast, Filter Stories.

https://link.filterstories.org/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. Use ProfilePrint to find the coffee your customers loved last year (without a week of cupping!). Use promo code "FILTER" to get 10% off your first year of a Mini Beluga subscription. Click here to discover ProfilePrint's many uses. Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. Office coffee = easy recurring revenue. WMF’s Elevation 10 and Peak 50 do the work for you. Learn more here. What kind of racing car does the Gaggia Classic GT home espresso machine remind you of? Use discount code FS202610 to get 10% off.

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Episoder(87)

Producer Toolkit: Fermentation, Pt 3 — Is using yeast cheating? And who decides?

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 ...

24 Aug 32min

Producer Toolkit: Fermentation, Pt 2 — The case for avoiding exciting fermentations

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 fer...

24 Aug 35min

Producer Toolkit: Fermentation, Pt 1 — Nature's lottery and coffee's 3,000-year lag

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 i...

24 Aug 22min

Producer Toolkit: Processing, Pt 3 - Critical instruments and poisoned rivers

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 T...

9 Aug 28min

Producer Toolkit: Processing, Pt 2 - Drying mistakes that ruin coffee quality

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 s...

9 Aug 30min

Producer Toolkit: Processing, Pt 1 - Coffee rockstars and picking’s brutal economics

This episode explores why chasing avant-garde processing before nailing the basics is a trap for most producers, the brutal economics behind selectively picking and ways to sort coffee cherries in the...

9 Aug 41min

Producer Toolkit: Farming, Pt 3 - Starved soils and vanishing labour

This episode explores what plants really need from the soil beneath them, and the labour shortage forcing farms to rethink how the work gets done. Part of The Coffee Producer Toolkit, a series made in...

27 Jul 44min

Producer Toolkit: Farming, Pt 2 - Water crisis, risky genetics and cash flow crunch

This episode explores the growing water crisis in coffee farming, why farmers are drawn to risky coffee varieties and coffee farming's hidden cashflow traps. Part of The Coffee Producer Toolkit, a ser...

27 Jul 35min