"Sour-style bread can be traced all the way to ancient Egypt, but it wasn't until tens of thousands of prospectors descended on California during the 1840s Gold Rush that sourdough started its slow rise to the style familiar today. Bakers found the loaves they were making out in the American West had a pleasant tangy taste. But why?
It turned out that San Fran's famously foggy climate was, and is, the perfect environment for the wild yeast cells and naturally occurring bacteria that give sourdough its characteristic flavour. As the city grew rapidly on gold wealth, claims were soon made that no one could produce a true sourdough loaf outside of a 50-mile radius of the centre. It's since been disproven, although the all-important lactic acid bacteria still goes by the scientific name Lactobacillus sanfranciscensis.
Science aside, the gold miners loved the bread, not least because it kept well, and a good San Francisco sourdough loaf remains a thing of wonder. It's essentially everything bog-standard supermarket bread isn't. It has texture, weight and a rough, robust crust. It tears slowly and beautifully. Add a bit of salted butter and it becomes a challenge to stop devouring the stuff."
Full article by BY BEN LERWILL, PUBLISHED 8 APR 2019, 23:50 BST