Coronavirus disease 2019, or COVID-19, has spread quickly throughout the world, and Cochrane is producing reviews to help decision makers respond to the pandemic. In April 2020, we published the rapid review of the effects of using ash for cleaning hands when soap and water are not available. In this podcast, Lars Jørgensen (left) from the Nordic Cochrane Centre spoke to his colleague there, Asger Paludan-Müller, about the review.