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Coffee. Science. Guru.

Coffee Science & Education Centre

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Do you like coffee? How about science? Have you ever wondered why your barista seems so intense about their trade when coffee is seemingly everywhere and easy to make? Well look no further! Nothing is ever as simple as it seems and coffee least of all. With Adam Carr Ph.D. behind the wheel we will cover everything from chemistry to geography, history to barista etiquette. Hit up podcast@sevenmiles.com.au and we'll even answer your questions on air.
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The Science of Coffee is a journey into coffee's hidden microscopic secrets to help you make even better coffee at home. Documentary maker and coffee professional James Harper travels the world and speaks with leading coffee scientists to help you appreciate coffee more deeply. You are going to get taken into the science of water, coffee extraction, plant genetics, espresso technology, latte foam, sonic seasoning, our sense of taste and smell, organic farming, roasting, grinding and freshnes ...
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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 f…
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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 s…
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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 t…
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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 y…
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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…
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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 eve…
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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 cul…
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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 se…
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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 coff…
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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…
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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 cre…
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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 year…
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In this episode we try to define beauty and aesthetics of coffee, understand the purpose of art and beauty, put forward a theory on the evolution of flavor, and understand the role of taste makers & critics in coffee. Here is a white paper that supports the theory: Paper Here is a step by step guide for becoming a taste maker: Research different ta…
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Seven roasters come together with 50+ years of combined roasting experience to answer questions from instagram and a live crowd. Follow the speakers: Kimhak @kimhak.em - Pair @pair.cupworks Spencer @spencer.aidukaitis - Peixoto @peixotocoffee Matt - Moxie @moxiecoffeeco Blair @theblairista, Curtis - Presta @prestacoffee Randy - Xanadu @xanadu.coffe…
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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 m…
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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…
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Water really matters when you’re brewing coffee. Different waters can dramatically change how a single coffee will taste. But what is the right water for the best coffee? In this episode I will give you the answer, but I will first take you back billions of years to tell you the story of a single mineral and how it's responsible for making our coff…
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The Science of Coffee is a journey into coffee's hidden microscopic secrets to help you make even better coffee at home. Across six episodes, documentary maker and coffee professional James Harper takes you deep into the world of water for coffee, coffee extraction, plant genetics, espresso technology, latte foam and sonic seasoning. Press the Subs…
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In this podcast we are joined by our good friend Kimhak Em of Pair Coffee to talk all about espresso theory and what espresso tools will help you pull the perfect espresso. Items mentioned: Weiss distribution tool Porcupress B plus espresso filter Ims screen Ims basket Vst basket Cube auto tamp by compak Puqpress Science tamp Malhkonig e65 Malhkoni…
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In this podcast we talk to Shelby Williamson about her coffee journey, learning to taste with her mentor Daniel Mendoza (a previous guest), her roasting philosophy, pros and cons of the different roasters she has roasted on, how to think about green coffee, how to QC effectively, and the future of coffee. We are deeply sorry about the audio quality…
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In this podcast we are joined by our good friend Kimhak Em to talk all about espresso theory, espresso machine mechanics and what espresso machines to buy. Tip us or our guests (Type episode # and we will split the tip with the guest) Venmo: @spencer-aidukaitis Instagram @unfilteredcoffeepodcast Email unfilteredcoffeepodcast@gmail.com…
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In this podcast we talk all about coffee species, varieties and the potential threats to coffee as we know it now. We start with out talking about species, then we move into the history of Typica and Bourbon, some thoughts on genetic diversity, what we think the future of coffee may look like and much more. Disclaimer: Neither Eddy or Spencer are b…
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In today's episode we talk to Nick Rayer. We were excited to talk to Nick as he is the middle of building his first business. He gives us his in the moment perspective of what it feels like to put it all together, along with some of his ideas on the future. We also get into his jazz career, as well as some talk about working on bar. Special Guest N…
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In today's episode we break down what's happening during coffee fermentation. We start with some definitions, then move into processing types, microorganisms and carbohydrates, fermentation types, environmental factors, and flavor creation. This is all from an essay I wrote that you can find below. This is where I put in the disclaimer that I am ju…
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Help us get better! Survey Link Equipment list Absolute Low end budget (below $50) Quality coffee Spring water Coffee mug Hand grinder Solid low end budget (below $300) Encore/Bodum/Chinese flat burr grinder Hand Grinder Thirdwave water Perfect water Kettles Digital Scale Brewers Mid/High Tier ($300+) Niche Zero Fellow Ode Timemore Chestnut X Timem…
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In this podcast, Eddy and Spencer break down extraction theory, brewing variables, ways to assess your coffee, and ways to brew better at home. We created a feedback form and would love to hear back from you guys about how we can make the show better in the future! Click here to fill it out. Links Flavor Map Waters Third Wave Water Perfect Water GC…
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Our guest today is Steve Holt, founder of Unravel Coffee Merchants, a business working directly with farms in Ethiopia with his partner Ashenafi Argaw. Steve started his specialty coffee career in 2002 at Novo Coffee in Denver, before moving to co-found Ninety plus where he has worked up until he started Unravel. He has spent years, working on farm…
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Our guest today is Blair Smith, the general manager at Presta Coffee. Blair has had a long and storied career in coffee. Starting with a position as a barista at Tart baking company in Massachusetts and then moving across the country to work for Augies, where she would become the general manager. She also started her competition run with Augies sta…
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In this podcast we talk to Jake Miller, the CEO and Founder of Fellow, a coffee product designer and manufacture based out of San Francisco. We talk to Jake about a bunch of different aspects of his business including how he thinks about product design, the process behind creating the Ode grinder, marketing, and running his business during covid. T…
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In this podcast we talk to Anita Tam, owner of Slow Pour Supply, which is a distributor of coffee tools. We talk about how she got into coffee, what makes for good design, latte art, inclusivity, and so much more. Special Guest Anita is incredibly intentional and thoughtful in everything she does. We learned so much from her and were so happy to ha…
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In this episode, we talk with our guest Curtis Zimmerman owner of Presta Coffee, where he is also the green buyer and roaster. Curtis is a long time friend and incredible person. He talks to us about how he got into coffee, roasting, sourcing, how he thinks about building out cafes and biking. We learned a ton from Curtis and think you guys will lo…
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In this episode, we start by cupping coffee sourced by our guest, Aaron Jordan from The Roast House. The Roast house is a fully organic roastery in Spokane, Washington. We talk to Aaron about his start in coffee, then we dig deep into the organic process and sourcing organic coffees. Aaron also shares valuable insights on growing a roasting team an…
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In this episode we talk to Daniel Mendoza, he led an interesting career in coffee working for many different coffee roasteries around the country including Buddy Brew Coffee in Tampa, as well as Corvus and huckleberry in Denver. He then moved into the world of Specialty tea, where he helped bring to specialty coffee shops across the west coast. He …
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In this episode, we start by cupping coffees that have been exported and imported by our guest Herbert Peñaloza and his buisness La Real Expedición Botánica. Then, we talk with Herbert about how he got started in coffee, why he started exporting and importing himself, and ask about his views on coffee processing. Segment 1 Coffee Rankings: 1st plac…
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In this episode, we try to understand what the job of the barista would be in a fully automated coffee shop, the benefits of automation with covid, and how this may impact the producer. Then we bring back Kimhak to ask him his thoughts on automation and coffee trends more generally. Special Guest Kimhak Em is part owner, roaster and barista at his …
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In this episode, we are joined by Kimhak Em in our first cupping to evaluate some of his coffees. Then Eddie and Spencer talk about cloud cafes, delivery coffee and wholesale hardships. Kimhak then joins in to talk about frozen green coffee and his future innovations in his coffee shop. Segment 1 Coffee Rankings: 1st place Panama - Hacienda La Esme…
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In this introduction podcast, we share a clip from our friend Kimhak Em, who shares his candid advice for a new barista just starting out. This clip comes from a future podcast with Kimhak, where we talk about the future of coffee and his unique approach to running a coffee shop. Kimhak Em is part owner, roaster and barista at his coffee shop PAIR …
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