Chris Young reveals how big industry uses 'sourfaux' to profit from misleading labels on bread.
A starter has a name. The programme opens at home, with a jar lifted after several weeks and a batch baker checking the smell of Esperanza. It smells alarming, and somehow right. Alcohol, a trace of nail polish remover and a noisy flour mill keep the story in an ordinary kitchen before it turns into a fight over public labels. Sourdough begins as upkeep: feeding, waiting, judging by smell and feel. Then the sharper question arrives. Should bread sold as sourdough have to meet a clearer legal definition? The science is lively, but careful. Dr Vanessa Kimball talks about microbes as tiny workers that are fed, coaxed along, folded into dough and then killed in the oven after doing the job. The image is funny. The point is not. Fermentation may affect satiety, nutrition, mineral availability, folate and blood sugar. Two slices can look the same, but Kimball says their nourishment may be quite different if one has had true, long, slow fermentation and the other has not. Then she pulls back. The evidence is still uneven, and sourdough health claims need more research before anyone gets too comfortable. By the end, the loaf has become a public question. The debate moves from baking to labels, education, politics and how much help shoppers should expect from the state. The guest does not tidy it up neatly. People may miss the difference, he suggests, but whether official labels should protect them is a bigger argument. Sourdough is the visible subject. Beneath it is a quieter worry about trust, language and the gap between what food appears to be and what it has actually become.
