In warehouses outside Madrid, twists of hop vines grow under LED lights and close supervision in what their guardians say could be the best way to futureproof the supply of a key ingredient in the world's most popular alcoholic drink, now threatened by climate change.
Due to their need for "goldilocks" conditions of long summer days and mild temperatures, hops are traditionally grown in temperate climes found in areas like Germany's Hallertau, the Czech Republic or the northwestern United States.
Spain's Ekonoke is seeking a solution by cultivating the water-intensive vines indoors through renewable-powered hydroponic systems that use nearly 95% less water than traditional outdoor farming. The ultimate goal is to maximise production of alpha-acids and essential oils that impart the bitter and fruity aromas so cherished by craft beer enthusiasts.
Strict hygiene measures such as protective clothing for staff ensure the space remains pest-free, taking the pesticides on which traditional farming often depends out of the equation. Sagrario says in the future, indoor plantations could ideally be set up nextdoor to brewers, acting as a carbon sink by reusing the CO2 emitted during fermentation to speed up the plants' photosynthesis and recycling filtered water residues left over from the manufacturing.100+ sustainability accelerator programme.
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