The Welsh Whisky Company uses a unique design of still – a single ‘pot’ beneath a tall rectifying column was developed by a team led by Dr David Faraday (a descendant of Sir Michael Faraday, discoverer of the electrolytic cell). Whilst Scottish distilleries generally use two conventional stills for their production, and the Irish three, the technology developed at Penderyn enables an extremely ‘clean’ and flavourful spirit to be produced from the single still. The design is also extremely energy efficient. Malted barley wash to Welsh Whisky’s specification is obtained from the well-known Welsh regional brewer, S A Brain & Co. The majority of the whisky is matured using casks sourced from Jack Daniel’s, Evan Williams and Buffalo Trace, and typically bottled at 46% without chill filtration.