Most beer drinkers probably don’t care a jot about the environmental impact of their favourite tipple. But they will soon be able to reduce their carbon footprint nonetheless, thanks to a technique that slashes both the energy required to brew beer and the amount of waste produced in the process.
The idea, called PDX, comes from Pursuit Dynamics of Huntingdon, UK. It adds a seemingly drastic step to conventional brewing: it blasts steam at supersonic speeds into the vat of brewing liquor to heat, agitate and atomise it. “The steam rips the liquid apart completely to form tiny, atomised droplets,”…
