Rosemullion Distillery is a whisky distillery in Mawnan Smith, Cornwall, England. Where to find it Rosemullion Distillery is based in Mawnan Smith, Cornwall. It is one of the distilleries mapped on the Whisky Clan distillery map, which aims to cover every working distillery we can verify. The story so far This is a short placeholder profile. We have only confirmed the name and location so far, and we do not want to publish anything we cannot back up. A full story with history