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. 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!
Episodes
April 22, 2024 • 49 mins
For your coffee to taste its best, it’s crucial you buy fresh roasts and grind fresh.…
.….Or maybe not.
When I began creating this episode, I was convinced that ‘fresh is best’. But, after delving into the science of coffee freshness, I don’t believe that anymore.
This episode goes deep into how diffusion and oxidation changes a coffee’s flavours.
You’ll learn what it takes to store your coffee grounds unbelievably well. So well, tha...
.….Or maybe not.
When I began creating this episode, I was convinced that ‘fresh is best’. But, after delving into the science of coffee freshness, I don’t believe that anymore.
This episode goes deep into how diffusion and oxidation changes a coffee’s flavours.
You’ll learn what it takes to store your coffee grounds unbelievably well. So well, tha...
Mark as Played
April 8, 2024 • 55 mins
In the last episode, I discovered that rinsing my Chemex filter papers was a waste of time! As a result I’ve managed to claw back over seven days of my life left on earth.
But why stop there?
The coffee industry is full of elaborate ways of brewing and savouring coffee: fancy drippers, cold metal balls, “slurp-able” cupping spoons.
These are very fun, but how many of them actually affect the flavour of our coffee?
I fear elaborate co...
But why stop there?
The coffee industry is full of elaborate ways of brewing and savouring coffee: fancy drippers, cold metal balls, “slurp-able” cupping spoons.
These are very fun, but how many of them actually affect the flavour of our coffee?
I fear elaborate co...
Mark as Played
March 25, 2024 • 46 mins
Should you rinse your filter paper before making a filter coffee? Almost everybody in coffee internet says you should.
But what if most of coffee internet was wrong?
In this episode, I show you how I try to answer this question like a professional sensory scientist would.
It’s hard. It’s frustrating. But ultimately, it’s worth it because I end up saving seven days of my life left on earth!
Please spread the word about The Science of ...
But what if most of coffee internet was wrong?
In this episode, I show you how I try to answer this question like a professional sensory scientist would.
It’s hard. It’s frustrating. But ultimately, it’s worth it because I end up saving seven days of my life left on earth!
Please spread the word about The Science of ...
Mark as Played
March 13, 2024 • 41 mins
Farming coffee organically is amazing because soils are more alive, birds and insects are more plentiful, farmers avoid getting sick with agrochemicals.
But, if it’s so great, why is less than 10% of the world’s coffee grown organically?
The fact is, going organic is hard. Much harder than growing coffee conventionally.
In this episode I show you the story of one of Central America’s most successful organic coffee cooperatives, RAOS...
But, if it’s so great, why is less than 10% of the world’s coffee grown organically?
The fact is, going organic is hard. Much harder than growing coffee conventionally.
In this episode I show you the story of one of Central America’s most successful organic coffee cooperatives, RAOS...
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February 26, 2024 • 38 mins
The world’s farming soils are deteriorating quickly.
Conventional coffee farming where plants are grown using agrochemicals allowed farmers to reap huge harvests these last 70 years. But these agrochemicals have been at the expense of soil health.
I travel to Honduras to explore a potential solution: organic coffee farming.
Come with me as I show you the organic farming tricks of Don Rufino, one of the region’s leading organic farmer...
Conventional coffee farming where plants are grown using agrochemicals allowed farmers to reap huge harvests these last 70 years. But these agrochemicals have been at the expense of soil health.
I travel to Honduras to explore a potential solution: organic coffee farming.
Come with me as I show you the organic farming tricks of Don Rufino, one of the region’s leading organic farmer...
Mark as Played
February 12, 2024 • 46 mins
Roasting coffee can be maddening. Just 4° Celsius is enough to make the same green beans taste distinctly different! And there are so many things roasters can play around with: temperature, time, fan speed, drum speed, types of probes…the list goes on and on.
So, if you want to start roasting yourself, where do you start!?
In the first half of this episode, I interview one of the world's leading roasting teachers who takes me throug...
So, if you want to start roasting yourself, where do you start!?
In the first half of this episode, I interview one of the world's leading roasting teachers who takes me throug...
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January 29, 2024 • 37 mins
What flavours do you want from your coffee?
Every coffee bean begins its life green. And if you brewed it up without first roasting it, you’d get a yellow-green cup of grass-flavoured water.
But, as soon you apply heat to a bean, the flavour can morph to from something quite vegetative to a very acidic unripe fruit, then a very sweet fruit, and eventually dark roasted flavours.
This is the magic of coffee roasting!
In this episode of T...
Every coffee bean begins its life green. And if you brewed it up without first roasting it, you’d get a yellow-green cup of grass-flavoured water.
But, as soon you apply heat to a bean, the flavour can morph to from something quite vegetative to a very acidic unripe fruit, then a very sweet fruit, and eventually dark roasted flavours.
This is the magic of coffee roasting!
In this episode of T...
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January 15, 2024 • 39 mins
Ever wonder why you and your friends can taste the same coffee, but you can’t agree on the flavour notes?
Join me as I explore this metaphysical mystery! I speak with leading scientists and ask: are the flavour receptors in your nose and mouth the same as mine? How does music and the shape of a cup affect what we taste? What about our different cultural backgrounds and language?
Best of all, I put all these questions to the test in...
Join me as I explore this metaphysical mystery! I speak with leading scientists and ask: are the flavour receptors in your nose and mouth the same as mine? How does music and the shape of a cup affect what we taste? What about our different cultural backgrounds and language?
Best of all, I put all these questions to the test in...
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January 8, 2024 • 44 mins
So you’ve just taken a sip of a very rare coffee, and flavours of passion fruit explode in your mouth.
But here’s the thing: that flavour of passion fruit is not coming from your mouth. It’s not even coming from your nostrils. It’s being picked up behind your eyes!
In this first episode of The Science of Coffee's second series, I unravel how our sense of smell and taste works to help you be a better coffee taster.
I shrink us down mi...
But here’s the thing: that flavour of passion fruit is not coming from your mouth. It’s not even coming from your nostrils. It’s being picked up behind your eyes!
In this first episode of The Science of Coffee's second series, I unravel how our sense of smell and taste works to help you be a better coffee taster.
I shrink us down mi...
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January 2, 2024 • 2 mins
We're back with another series of The Science of Coffee!
Across 10 science stories, narrative audio producer and coffee professional James Harper takes you on a journey into coffee's hidden microscopic secrets.
James has spent the last year traveling to Central America, Greece, Norway, Switzerland and interviewing dozens of the world’s leading coffee scientists. This insights will help you appreciate coffee more deeply and make even...
Across 10 science stories, narrative audio producer and coffee professional James Harper takes you on a journey into coffee's hidden microscopic secrets.
James has spent the last year traveling to Central America, Greece, Norway, Switzerland and interviewing dozens of the world’s leading coffee scientists. This insights will help you appreciate coffee more deeply and make even...
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May 29, 2023 • 44 mins
America is coffee-obsessed. From Central Perk’s red couch being the centre of major plot twists in Friends to the fact the average American drank more than two cups a day.
And the conventional explanation is pretty straightforward: an English colonist introduces coffee to Jamestown in 1607. 150 years later Americans rebel against the British by throwing tea chests into Boston harbour and drinking coffee becomes their patriotic duty....
And the conventional explanation is pretty straightforward: an English colonist introduces coffee to Jamestown in 1607. 150 years later Americans rebel against the British by throwing tea chests into Boston harbour and drinking coffee becomes their patriotic duty....
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May 15, 2023 • 44 mins
One morning back in the ‘80s, Howard Schultz walks out of his Milan hotel, stumbles into an espresso bar, and fundamentally changes coffee history.
He discovered (and then popularises) the iconic, timeless Italian coffee experience: Rich thick coffee, an affordable price and great theatre.
But this Italian ritual is surprisingly young, so young that Howard Schultz was in school while some of it was being developed!
In this third epi...
He discovered (and then popularises) the iconic, timeless Italian coffee experience: Rich thick coffee, an affordable price and great theatre.
But this Italian ritual is surprisingly young, so young that Howard Schultz was in school while some of it was being developed!
In this third epi...
Mark as Played
May 1, 2023 • 47 mins
Haiti was once the biggest, most profitable coffee growing region in the world.
But today Haiti is one of the world’s poorest nations where you can’t get a bag of Haitian beans delivered to Berlin in a week for love nor money.
In this second episode of Series Two of A History of Coffee, we show you how colonialism and racism dragged Haiti into poverty, and the role of coffee at the centre of it.
Be warned: this episode contains grap...
But today Haiti is one of the world’s poorest nations where you can’t get a bag of Haitian beans delivered to Berlin in a week for love nor money.
In this second episode of Series Two of A History of Coffee, we show you how colonialism and racism dragged Haiti into poverty, and the role of coffee at the centre of it.
Be warned: this episode contains grap...
Mark as Played
April 17, 2023 • 45 mins
A coffee shop is a lot more than just a place to drink coffee. The seats and sofas encourage you to invite a friend, and chat.
And chatting is powerful: ideas that emerge from these caffeine-fuelled conversations give birth to modern finance and even the founding of great artistic and scientific institutions.
Meanwhile, other ideas threaten those in power, and have led to many attempts to ban coffeeshops (and even coffee itself!) the...
And chatting is powerful: ideas that emerge from these caffeine-fuelled conversations give birth to modern finance and even the founding of great artistic and scientific institutions.
Meanwhile, other ideas threaten those in power, and have led to many attempts to ban coffeeshops (and even coffee itself!) the...
Mark as Played
April 3, 2023 • 5 mins
We're back with more stories about the tiny psychoactive seed that changed the world and continues to shape our lives today.
In Series Two, we reveal how the invention of the coffee shop revolutionised societies, why colonialism, racism and coffee have kept once prosperous Haiti poor today, how Italy's revered espresso culture was created, and we debunk many myths around America's supposed love affair with coffee.
If we want to make ...
In Series Two, we reveal how the invention of the coffee shop revolutionised societies, why colonialism, racism and coffee have kept once prosperous Haiti poor today, how Italy's revered espresso culture was created, and we debunk many myths around America's supposed love affair with coffee.
If we want to make ...
Mark as Played
January 31, 2023 • 53 mins
Imagine you’ve got a cup of coffee in front of you. You haven’t tasted it yet. You therefore don’t know what it tastes like, right?
Wrong. Some scientists argue that you actually do know what it will taste like (more or less), and the act of tasting simply confirms what you have already imagined it will taste like. And that’s because a growing body of research is revealing that sight, sound and touch all affect your expectation of ...
Wrong. Some scientists argue that you actually do know what it will taste like (more or less), and the act of tasting simply confirms what you have already imagined it will taste like. And that’s because a growing body of research is revealing that sight, sound and touch all affect your expectation of ...
Mark as Played
January 17, 2023 • 43 mins
When was the last time you picked up a cappuccino with a mountain of foam perched on top? Maybe these are the cappuccinos you make every morning at home.
I personally really, really dislike them! The foam is cold, raspy, and gets in the way of the actual coffee liquid.
How much better would your mornings be if, instead, your cappuccino had that creamy, silky “microfoam” you find in a specialty coffee cafe?
In this episode, I take you ...
I personally really, really dislike them! The foam is cold, raspy, and gets in the way of the actual coffee liquid.
How much better would your mornings be if, instead, your cappuccino had that creamy, silky “microfoam” you find in a specialty coffee cafe?
In this episode, I take you ...
Mark as Played
January 3, 2023 • 42 mins
A good espresso is a sublime experience: rich, sweet, and wonderfully caffeinated.
But, who woke up one morning and thought to themselves, ‘I’m going to build a contraption that forces a tiny amount of super hot water with incredible pressure through a bed of very finely ground coffee’?
Well, the fact is, the first “espresso” machine built 150 years ago was awful in almost every way. Worst of all, if you gave that coffee to anybody ...
But, who woke up one morning and thought to themselves, ‘I’m going to build a contraption that forces a tiny amount of super hot water with incredible pressure through a bed of very finely ground coffee’?
Well, the fact is, the first “espresso” machine built 150 years ago was awful in almost every way. Worst of all, if you gave that coffee to anybody ...
Mark as Played
November 22, 2022 • 63 mins
How can you make better coffee at home? Well, an easy way is to buy higher quality beans.
But, I’m concerned this is going to get harder and harder for you in the future.
Climate change is making coffee taste worse while also pushing farmers into financial hardship.
In this episode we explore how genetic development can produce a coffee tree that might save the day. Is there a wild coffee tree happily growing in the forests somewhe...
But, I’m concerned this is going to get harder and harder for you in the future.
Climate change is making coffee taste worse while also pushing farmers into financial hardship.
In this episode we explore how genetic development can produce a coffee tree that might save the day. Is there a wild coffee tree happily growing in the forests somewhe...
Mark as Played
November 8, 2022 • 53 mins
How you brew your coffee dramatically affects what you taste. And I do mean dramatic! Brewing up the same bag of coffee beans can taste like a slice of heaven, or a slap in the face.
So, what exactly is happening at a microscopic level when water swirls through coffee grinds? Why does boiling water extract certain flavours, while letting the kettle cool for five minutes make it taste markedly different?
In this episode, we dive dee...
So, what exactly is happening at a microscopic level when water swirls through coffee grinds? Why does boiling water extract certain flavours, while letting the kettle cool for five minutes make it taste markedly different?
In this episode, we dive dee...
Mark as Played
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