Port of Leith is Scotland's first vertical distillery, founded by Ian Stirling and Paddy Fletcher. Standing nine storeys tall, it’s just next door to the Royal Yacht Britannia and a stone's throw away from our spiritual home, The Vaults. As the distillery nears completion, the spirit of innovation continues in the development of their new Scotch, a process that Ian and Paddy began long before the distillery broke ground in Leith with research and experimentation on the role of yeast and fermentation. Mads Schmoll sat down with Ian and Paddy to find out more about what's ahead.