Deep inside your coffee grinder, tiny changes can have massive consequences. This episode takes you deep inside Mahlkönig’s grinders to show you how coffee is ground and the importance of particle sizes on flavour. If you’re a home coffee lover, you could easily spend thousands of dollars on your coffee grinder. But after diving deep into the R&D of grinder manufacturing, I learned that after a certain point spending more probably won’t produce a better tasting cup of coffee for you! --------- Please spread the word about The Science of Coffee! Discover how I make these Filter Stories episodes by subscribing to my Substack newsletter. Write a review on Apple Podcasts Follow me on Instagram and tag me in an Instagram story Leave a 5 star rating on Spotify Explore Mahlkönig’s range of world leading grinders, trusted by baristas globally. Go deeper into the world of grinding Take Barista Hustle’s Advanced Espresso course Learn from Lance Hedrick where the sweet spot is for buying a coffee grinder Get super nerdy with Jonathan Gagné’s writings on grinding Read up on Samo Smrke’s work on coffee fines Connect with my very knowledgeable guests Arnaldo Rodrigues - LinkedIn Luca Lange - LinkedIn Chris Meier - LinkedIn Dario Burger - Instagram The Science of Coffee is made possible by these leading coffee organisations: BWT Water and More Marco Beverage Systems ROEST Sustainable Harvest Mahlkönig The Science of Coffee is a spin-off series from James Harper's documentary podcast Filter Stories
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, that if you do it right, you will struggle to taste the difference between two month old coffee compared to those same beans freshly ground! But here’s the weirdest thing: Maybe, just maybe, you will prefer old coffee more than the fresh stuff. ---------- Please spread the word about The Science of Coffee! Discover how I make these Filter Stories episodes by subscribing to my Substack newsletter. Leave a 5 star rating on Spotify Follow me on Instagram and tag me in an Instagram story Write a review on Apple Podcasts Explore Mahlkönig’s range of world leading grinders, trusted by baristas globally. Dive deeper into the science of coffee freshness Do a Certificate of Advanced Studies with the Coffee Excellence Centre Pick up a copy of the SCA’s Coffee Freshness Handbook Connect with my very knowledgeable guests Samo Smrke - Instagram 19 Grams Coffee Roasters in Berlin - Instagram Arnaldo Rodrigues - LinkedIn The Science of Coffee is made possible by these leading coffee organisations: BWT Water and More Marco Beverage Systems ROEST Sustainable Harvest Mahlkönig The Science of Coffee is a spin-off series from James Harper's documentary podcast Filter Stories
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 the Athen’s World of Coffee trade show. Many poor unsuspecting Filter Stories spit, splutter and gasp in the name of science! --------- See Marco Beverage Systems' SP9 for yourself, and discover their range of consistent and energy-efficient coffee brewers for your cafe. Please spread the word about The Science of Coffee! Follow me on Instagram and tag me in an Instagram story Write a review on Apple Podcasts Leave a 5 star rating on Spotify Connect with my very knowledgeable guests Helene Hopfer - LinkedIn Joel Mainland - LinkedIn Fabiana Carvalho - Instagram Janice Wang - LinkedIn Felipe Reinoso - LinkedIn Freda Yuan - Instagram Mandy Naglich - Instagram The Science of Coffee is made possible by these leading coffee organisations: BWT Water and More Marco Beverage Systems ROEST Sustainable Harvest Mahlkönig The Science of Coffee is a spin-off series from James Harper's documentary podcast Filter Stories
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 microscopically and we dive into your tongue to show you why good black coffee tastes sweet, even though there’s no sugar in it. We then travel up into our noses and get stuck in a lot of mucus. This slime might be disgusting, but we need it to be able to smell well. And finally, with the help of tasting expert and author Mandy Naglich, I show you three effective ways you can train yourself to be a much better coffee taster without having to go on any expensive courses. The trick is to train our internal flavour prediction models! This episode will help you deepen your appreciation of coffee and its delicious complexity. --------- See Marco Beverage Systems' SP9 for yourself, and discover their range of consistent and energy-efficient coffee brewers for your cafe. Please spread the word about The Science of Coffee! Follow me on Instagram and tag me in an Instagram story Write a review on Apple Podcasts Leave a 5 star rating on Spotify Become a better coffee taster! Pick up a copy of Mandy Naglich’s book “How To Taste” Sign up for the Specialty Coffee Association’s Sensory Skills courses Do an online sensory course with CoffeeMind Connect with my very knowledgeable guests Mandy Naglich - Instagram Linda Bartoshuk - Website Joel Mainland - LinkedIn Fabiana Carvalho - Instagram Janice Wang - LinkedIn Peter Giuliano - LinkedIn Bram De Hoog - Instagram The Science of Coffee is made possible by these leading coffee organisations: BWT Water and More Marco Beverage Systems ROEST Sustainable Harvest a href="https://bit.ly/3NGRFA6" target="_blank"...
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 a coffee’s flavours. In this episode, I explore how certain sounds might make your coffee taste sweeter, while other sounds translate to bitterness. And I expose how some cafe owners might be ruining the flavours of the high-end specialty coffee you paid for without even realising it. In the second half, I show you why so many of our scientific questions about coffee are going unanswered. I take you deep into the future of coffee science by explaining who’s doing research into coffee science, why they’re doing it, how much it costs and how you can get involved. ---------- Please spread the word about The Science of Coffee! Follow me on Instagram and tag me in an Instagram story Write a review on Apple Podcasts Leave a 5 star rating on Spotify Explore the technology behind Fiorenzato’s AllGround home coffee grinder Want to listen to more documentary podcasts about coffee? Check out my Filter Stories podcast Get more involved in coffee science! Buy Brita Folmer’s The Craft & Science of Coffee Read the Specialty Coffee Association's 25 Magazine for cutting edge insights into coffee science, business and sustainability, including Charles Spence’s article on sonic seasoning Partner with the Coffee Science Foundation Explore Felipe Reinoso Carvalho’s sonic research, including Diego Campos’ winning World Barista Championship routine Apply to study at the UC Davis Coffee Centre Do an online course with ZHAW’s Coffee Excellence Centre Subscribe to Barista Hustle and complete their online coffee courses Become a member of the Barista Guild, Coffee Roaster’s Guild, Coffee Technicians Guild and attend their events! Connect with my very knowledgeable guests Charles Spence - Academic profile Fabiana Carvalho - Instagram Janice Wang - a href="https://bit.ly/3i1eEt7" target="_blank"...
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 deep into the bubbles of latte foam to show you what makes them, what destroys them, and how you can craft mouth-melting lattes. Along the way I also settle the big debate: what is the actual difference between regular Oatly and Oatly Barista Edition!? --------- Please spread the word about The Science of Coffee! Follow me on Instagram and tag me in an Instagram story Write a review on Apple Podcasts Leave a 5 star rating on Spotify Try Oatly Barista Edition (this episode’s sponsor) for yourself Want to listen to more documentary podcasts about coffee? Check out my other show, Filter Stories Go deeper into latte foam science! Measure your latte foam’s bubble size! Marvel at tetrakaidecahedra foam for yourself Check out Steven Abbott’s brilliant science website Learn how to create microfoam with Lance Hedrick Study milk science with Barista Hustle’s online courses Connect with my very knowledgeable guests Steven Abbott - website Rituja Upadhyay - LinkedIn Nidhi Bansal - LinkedIn Thom Huppertz - LinkedIn Sofia Eldhe - LinkedIn Toby Weedon - LinkedIn The Science of Coffee is made possible by these leading coffee organisations BWT Water and More Marco Beverage Systems Trabocca Eversys Oatly Fiorenzato
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 on the street, nobody would say it’s even an espresso! But, over the decades, problems begat solutions that begat more problems that culminated in espresso machines like Eversys that produce gorgeous espressos at just the push of a button. And it’s got me wondering: what is the perfect espresso machine? How far can we go? But, before clicking play, be warned: this story gets explosive and bloody! ------- Please spread the word about The Science of Coffee! Follow me on Instagram and tag me in an Instagram story Write a review on Apple Podcasts Leave a 5 star rating on Spotify Learn more about how Eversys espresso machines (this episode’s sponsor) produce high quality espressos Listen to my A History of Coffee podcast series with Prof. Jonathan Morris Want to listen to more documentary podcasts about coffee? Check out my other podcast, Filter Stories Pictures of the espresso machines featured in this episode Angelo Moriondo (1884, “Big water boiler with gnarly bits”) La Pavoni Ideale (1905, "Fire hydrant") Gaggia Tipo Classica (1947, “Lever”) Faema E61 (1961, “Retro 60s toaster”) Eversys (2022, “push button”) Want to go deeper into espresso machine technology? Coffee Technician Guild’s Educational Courses Barista Hustle’s The Espresso Machine course Read Prof. Jonathan Morris’ book ‘Coffee: A Global History’ Do your own coffee museum tour in Italy! MUMAC (Milan) Rancilio Officina 1926 (Milan) Accademia del Caffè Espresso (Florence) Connect with my very knowledgeable guests Jonathan Morris - Instagram Hylan Joseph - LinkedIn Giorgio Rancilio - a href="http://bit.ly/3jJadU9" target="_blank" rel="noreferrer...
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 somewhere that could be our silver bullet? What about if we mix existing documented species together? But, the big problem is that genetic research is slow, and farmers can’t wait around. So, in the second half, we learn how coffee farmers in Kenya are trying to fix the problem right now. And I’m actually tentatively hopeful the beans you brew in the morning are not going to get worse. But, it all depends on you, me and the coffee industry making a couple of changes right now. —--- Please spread the word about The Science of Coffee! Follow me on Instagram and tag me in an Instagram story - https://bit.ly/2Mlkk0O Write a review on Apple Podcasts - https://apple.co/3sf87MV Leave a 5 star rating on Spotify - https://spoti.fi/3yHkjcV Learn more about how Trabocca, this episode’s sponsor, works with coffee farmers: https://bit.ly/3Tjn8bV Support the work of World Coffee Research: https://bit.ly/3VtyoV6 Become a member of Kew Gardens: https://bit.ly/3yFZ8b0 Find some of Alvans Mutero’s (https://bit.ly/3T0NHTy) and Thiriku’s (https://bit.ly/3CCxHQJ) coffee to taste for yourself Learn more about cloning coffee plants on my other podcast, Adventures in Coffee - https://bit.ly/3EFBmzG Want to listen to more documentary podcasts about coffee? Check out Filter Stories - https://bit.ly/3zb5vnO Connect with my very knowledgeable guests: Sarada Krishnan - LinkedIn (https://bit.ly/3rW9dwB) and Research Gate (https://bit.ly/3VvzDTq) Aaron Davis - Kew Gardens (https://bit.ly/3CAicZg) Hanna Neuschwander - LinkedIn (https://bit.ly/3MvW2Mi) Bernard Gichimu - LinkedIn (https://bit.ly/3VrOIFJ) Learn more about the coffee varieties discussed on this episode: SL 28 - https://bit.ly/3MvNIw6 SL 34 - https://bit.ly/3rTX2QX Ruiru 11 - https://bit.ly/3CXmDPf Batian - https://bit.ly/3EEls8M The Science of Coffee is made possible by these leading coffee organisations: BWT Water and More - https://bit.ly/3EEpuxN Marco Beverage Systems - https://bit.ly/3T2YDzY Trabocca - https://bit.ly/3Tjn8bV Eversys - https://bit.ly/3CBkp6X Oatly - a href="https://bit.ly/3exvlKS"...
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 deep into the academic research conducted at the UC Davis Coffee Center so you can choose your flavour adventure: Do you like your coffees when they’re a sour bomb? A floral caress on the lips? A smokey drag on a pipe? Or a treacle of sweet syrup? We also explore why it can be so difficult getting the same flavours from the same beans consistently. And finally, I equip you with tools so you can begin finding your perfect brew. —--- Please spread the word about The Science of Coffee! Follow me on Instagram and tag me in an Instagram story - https://bit.ly/2Mlkk0O Write a review on Apple Podcasts - https://apple.co/3sf87MV Leave a 5 star rating on Spotify - https://spoti.fi/3yHkjcV Explore this episode’s sponsor Marco Beverage Systems SP 9 brewer and how it delivers consistent brews in the cafe (https://bit.ly/3Tgh18r) Listen to the Adventures in Coffee episode about making dramatically different brews using the Aeropress: https://bit.ly/3TghsQ7 Want more to listen to more documentary podcasts about coffee? Check out Filter Stories - https://bit.ly/3zb5vnO Want to go deeper into coffee extraction? Mackenzie Batali’s fractionation research - https://bit.ly/3CFnvH0 UC Davis’ brewing control chart research - https://bit.ly/3CLoiGz Take courses on coffee brewing with the Specialty Coffee Association - https://bit.ly/3EQFoVV Study at the UC Davis Coffee - https://bit.ly/3TwSgod Read ‘The Craft and Science of Coffee’ - https://bit.ly/3zb7bN8 Connect with my very knowledgeable guests: Samo Smrke - LinkedIn (https://bit.ly/3EKrjtg) and Instagram (https://bit.ly/3IdrfRz) Bill Ristenpart - Academic profile (https://faculty.engineering.ucdavis.edu/ristenpart/) Mackenzie Batali - LinkedIn (https://bit.ly/3s7VRxr) Peter Giuliano - LinkedIn (https://bit.ly/3yT66tv) Danny Pang - LinkedIn (https://bit.ly/3Sd9mqq) David Walsh - LinkedIn (https://bit.ly/3VEH7Uo) The Science of Coffee is made possible by these leading coffee organisations: BWT Water and More - https://bit.ly/3EEpuxN Marco Beverage Systems - https://bit.ly/3T2YDzY Trabocca - https://bit.ly/3Tjn8bV Eversys - https://bit.ly/3CBkp6X Oatly - a...
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 coffees taste lame. Because here’s the thing: water science is chemistry, and chemistry is very complicated and easily forgettable. But with a great story, I’m hoping you’ll remember! In the second half, I show you why Christopher Hendon’s book Water for Coffee made a big splash in the coffee community, but also why some academic chemists are critical of the book, and how this all manifested in the creation of the Specialty Coffee Association’s Water Quality Handbook. And, to cap it all off, I offer you some environmentally conscious ways to get hold of good water for coffee, so your coffee brews can finally explode in flavour. —--- Please spread the word about The Science of Coffee! Follow me on Instagram and tag me in an Instagram story - https://bit.ly/2Mlkk0O Write a review on Apple Podcasts - https://apple.co/3sf87MV Leave a 5 star rating on Spotify - https://spoti.fi/3yHkjcV Discover this episode’s sponsor BWT’s water filtration products. I use their Penguin cartridges (http://bit.ly/3Xiuq2a) and cafes can use their BestAqua ROC (https://bit.ly/3EPLIx9) Read Marcia Bjornerud’s amazing book, Reading The Rocks: https://bit.ly/3EQIYj4 Want more to listen to more documentary podcasts about coffee? Check out Filter Stories - https://bit.ly/3zb5vnO Want to go deeper into water chemistry? SCA’s Water Quality Handbook: https://bit.ly/3TyWM5X BWT White Paper on the effects of magnesium (German): https://bit.ly/3TqOFbq How to add magnesium to your soft water out of the tap (scroll to bottom): https://bit.ly/3s5WYOm Christopher Hendon’s Water for Coffee: https://amzn.to/3Tbo3LS Certificate of Advanced Studies at Zurich’s Coffee Excellence Center online course: http://bit.ly/3xlIOel Read ‘The Craft and Science of Coffee’: https://bit.ly/3zb7bN8 Barista Hustle's Water course - https://bit.ly/3z8zSKA James Hoffman's water video - https://bit.ly/3Duxn8f Connect with my very knowledgeable guests: Samo Smrke - LinkedIn (https://bit.ly/3EKrjtg) and Instagram (https://bit.ly/3IdrfRz) Chahan Yeretzian - Linkedin (https://bit.ly/3S4emO1) Frank Neuhausen - LinkedIn (https://bit.ly/3gg4Fie) Marcia Bjornerud - Academic profile (https://bit.ly/3eCYuEi) Christopher Hendon - LinkedIn (https://bit.ly/3EXULMe) and Instagram (https://bit.ly/3eAUuo3) The Science of Coffee is made possible by these leading coffee organisations: BWT Water and More - https://bit.ly/3EEpuxN Marco Beverage Systems - https://bit.ly/3T2YDzY Trabocca - https://bit.ly/3Tjn8bV Eversys - https://bit.ly/3CBkp6X Oatly - https://bit.ly/3exvlKS Fiorenzato - https://bit.ly/3T3nmUQ
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 Subscribe button so you don't miss future episodes! The Science of Coffee is a spin-off series from James Harper's documentary podcast Filter Stories. Follow James on Instagram: https://bit.ly/2Mlkk0O Listen to Filter Stories: https://bit.ly/3zb5vnO The Science of Coffee is made possible by these leading coffee organisations: BWT Water and More Marco Beverage Systems Trabocca Eversys Oatly Fiorenzato
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