The Siderit distillery was founded in 2012 in Cantabria in northern Spain, by David Martínez and Rubén Leivas. The pair began in an 80-square-meter warehouse, producing 6,000 bottles a year. Now, they have moved to a site 10 times larger producing 250,000 bottles a year. The distillery uses a rather unique method, distilling in fractional glass flasks!