How%20to%20turn%20spent%20coffee%20grounds%20into%20a%20punchy%20kombucha%20%u2013%20recipe%20%7C%20Coffee%20%7C%20The%20Guardian

How%20to%20turn%20spent%20coffee%20grounds%20into%20a%20punchy%20kombucha%20%u2013%20recipe%20%7C%20Coffee%20%7C%20The%20Guardian: Across the world, almost 10bn kilos of coffee beans are consumed each year, and those beans are grown on 10m hectares across the so-called bean belt, an area roughly 25 degrees on either side of the equator. Imagine the impact if the waste from all that coffee were repurposed to make food stuffs, fertiliser, leathers, skin-care products and even biofuel