Having obtained the Lacons rights Mr Carver was able to claim the brewery's original yeast strains which had been stored at the National Collection of Yeast Cultures (NCYC) for nearly half a century.

BBC: Great Yarmouth Lacons Brewery revives historic ales

The more you touch the yeast, the greater risk of getting an infection which is deadly in a brewery.

CNN: New ideas brewing in beer industry

What happened next included the town fathers' constructing them a new, modern brewery, the hiring of a lager-minded brewmaster from Bavaria and possibly the theft of a Bavarian yeast strain, smuggled in by a monk.

FORBES: Czech Mate