Visitors to the renowned Bibliotheca Yumblog will notice in the recent additions cabinet a small but essential tome called ‘Ferment from scratch’ by Mark Diacono. This is number four in the ‘…from scratch’ series, the other three being Brew, Sourdough, and Chartuterie. Mr Diacono is also the author of a much-loved and oft-consulted cookbook here at Yumblog Villas called ‘Sour: …