Filter Stories - Coffee Documentaries artwork

Food · James Harper

Filter Stories - Coffee Documentaries

by James Harper

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!

Latest episodes

Showing 20 · updated from the feed

Producer Toolkit: Marketing & Sales, Pt 2 - Navigating trade shows

This episode explores what a trade show actually feels like for a farmer who flew in on money his community pooled together, why a sausage dog opened a door that hundreds

Sep 14
43 min

Producer Toolkit: Marketing & Sales, Pt 1 - The power of story

This episode explores why specialty coffee is a luxury business that runs on story more than flavour. Part of The Coffee Producer Toolkit, a series made in collaboration

Sep 14
37 min

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

Aug 24
32 min

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

Aug 24
35 min

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

Aug 24
22 min

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-p

Aug 9
28 min

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 T

Aug 9
30 min

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

Aug 9
41 min

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 Pro

Jul 27
44 min

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

Jul 27
35 min

Producer Toolkit: Farming, Pt 1 - Low harvests and profit blind spots

Welcome to The Coffee Producer Toolkit, a series made in collaboration with Lucia Solis. This series will help you understand coffee farming better than most professiona

Jul 27
25 min

History: Guatemala’s Inconvenient Truth, Pt 2

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

Apr 20
28 min

History: Guatemala’s Inconvenient Truth, Pt 1

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 u

Apr 20
43 min

History: Surrogates - Anything but the coffee

What happens when coffee disappears?   This is not a thought experiment! It’s happened many times in history: War, blockades, tariffs, ideology, health panics, sanction

Mar 2
46 min

History: Ethiopia’s wild coffee forests

Most coffee is grown on vast plantations using machines, pesticides and fertilisers.    But in Ethiopia, coffee grows wild in humid forests surrounded by birds.    An

Feb 9
48 min

History: Hamburg and Europe’s coffee trade

On a long walk through Hamburg, somewhere between the fish markets and giant cranes, you might stumble a giant bronze coffee bean looks like its crash landed from space. 

Jan 5
50 min

Introducing: Series Three of A History of Coffee

We’re back with more stories about the tiny psychoactive seed that changed the world and continues to shape our lives today. Is it possible to follow the story not just

Dec 29 2025
2 min

Science: Coffee Quality, Pt 3 - When the “quality” myth hits the farm

For twenty years, the 2004 cupping form profoundly shaped the specialty coffee world.   But on the hillsides of coffee farms, some of the form’s byproducts have been di

Dec 8 2025
30 min

Science: Coffee Quality, Pt 2 - How “quality” became a myth

If you ask two specialty professionals what makes a high-quality coffee, you’ll likely get a surprisingly consistent answer: clean, sweet, juicy, bright. To an outsider,

Dec 8 2025
25 min

Science: Coffee Quality, Pt 1 - The birth of specialty coffee flavours

For the longest time, coffees were dull and bitter. But then a small group of pioneers changed the world.    In this episode, we travel back to the 1960s and ’70s to me

Dec 8 2025
23 min

Chart trend

Position in the Food chart (US), last 90 days.

#12
all-time peak
19
days in the top 50 since Nov 2024

Chart positions

Where Filter Stories - Coffee Documentaries ranks today in each Apple Podcasts chart (US, Sep 18, 2026).

#139 ▲ 45 Food US

What listeners say

A curated, balanced selection of Apple Podcasts reviews.

Really enjoy listening to this podcast as a coffee lover myself. The podcasts are really informative and well narrated. Really thankful for this. Highly recommend it.

adi_kamath · Oct 2024

All of James coffee podcast series are absoulely fantastic! Highly engaging, very well done, completely professional while retaining an openness and inviting air and the music (that James plays himself' piano) is all just great. Any coffee lover will learn something from his work. Thanks James!

theCoffeeScientist · May 2023

Loved all the information provided through world class storytelling. Would recommend this to anyone looking to get a better understanding of the coffee industry.

CrisinSeattle · May 2022

Definitely pushed me to investigate which roasters in my area are paying a real price for coffee that will pay growers a living wage.

BMoreGarrett · May 2022

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About Filter Stories - Coffee Documentaries on Reason.fm

Here you find the Apple Podcasts chart positions of Filter Stories - Coffee Documentaries, its latest episodes to listen to directly, and reviews from listeners. Rankings are updated daily for the United States.

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