Came across an interesting item on a "sourdough" loaf label in the local supermarket.
They bake those tasteless loaves on site with addition of "sourdough flour". They taste midly sour, but nothing like well fermented sourdough. When I enquired what "sourdough flour" is they said it's just like any other bread mix in a 25 kg bag - mix with water and bake as per instructions. No additional yeast required. The process is the same as for all their other yested breads.
Did anyone come across it?