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	Podcast:		Filter Stories - Coffee Documentaries
	Episode:		The two ingredients in water that ruin your coffee, and the ancient story behind them
	Category:		Arts
	Duration:		00:38:40
	Publish Date:		2025-07-28 03:00:00
	Description:		550 million years ago, earth was perfect. We had perfect water for coffee AND we were living in a vegetarian paradise! But then Earth changed—violently. The planet shifted from a peaceful, plant-eating paradise to a darker, more brutal world. And in this new world, the chemistry of water was forever altered. This is the wild story of how earth-shaking forces and the spirits of long-dead critters ruin your coffees today. This story will help you remember the two invisible ingredients in your water that have a huge impact on coffee flavour and your brewing equipment: calcium and hydrogen carbonate. Read Marcia Bjonerud’s amazing book, Reading the Rocks Please spread the word about The Science of Coffee! Leave a 5 star rating on Spotify Follow me on Instagram and tag me in an Instagram story Write a review on Apple Podcasts Discover how I make these Filter Stories episodes by subscribing to my Substack newsletter Season 3 of The Science of Coffee is made possible by these leading coffee organisations: The Coffee Quest \| BWT \| TODDY \| Algrano \| Probat Note: this is a reworked version of my 2022 episode Water for Brewing Coffee.
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