Buying casks of whisky could be more profitable than purchasing precious metals, digital currencies or shares, according to an investment monitor.

A new data modelling algorithm has been used to produce the BC20 Whisky Cask Index. It is based around the values of Scotch whisky of various ages produced across a range of distilleries.

The venture is backed by Cask 88, a rare bottle and cask broker, Braeburn Whisky, a specialist in the sale of casks, and Whiskystats, a data collection and analysis firm.

The index suggests someone investing $100,000 in whisky casks in July 2018 would have assets worth close to $160,000 by the end of June this year. The same size of initial investment in gold, Bitcoin or the S&P 500 shares index