Celtic Renewables is combatting rampant fossil fuel use by converting low-value biological material—from whisky production residues, draff and pot ale—into renewable chemicals and sustainable biofuel. Production of malt whisky takes just barley, yeast and water: the components are fermented until an alcohol forms. During this process, two byproducts are formed, in large volumes—residual barley, called draff, and pot ale. These can be made into high value and low carbon products: acetone, butanol and ethanol, biochemicals that play an important role in daily life, from the food industry to health and cosmetics. The process is scalable and can be applied to byproducts across the food, drink and agriculture industries—there is huge potential to use all residue waste as a resource based on this procedure.