Coffee Roasting, Part 1: How heat transforms coffee beans

Filter Stories - Coffee Documentaries

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 The Science of Coffee, I show you a full roast in action on the ROEST P3000, taste how coffee flavours evolve from acidic to bitter, and speak to leading coffee roasting scientists to reveal the mind-bending chemical and physical transformations taking place.
See for yourself Roest's innovative P3000 fully automatic roaster.
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The Science of Coffee is a spin-off series from James Harper's documentary podcast Filter Stories