Sourdough Rosemary and Potatoe Bread - 250g - handmade by Great Taste Award winning bakery The Bread Factory £3.90 Sold Out Roast potatoes are kneaded into the dough with skins on to create a tacky, richly flavoursome sourdough, fragrant with nigella seeds and rosemary. Sold Out Added! Roast potatoes are kneaded into the dough with skins on to create a tacky, richly flavoursome sourdough, fragrant with nigella seeds and rosemary.