With millet, linseeds, poppy & pumpkin seeds, toasted sunflower seeds & a 36 hour sourdough starter for a fantastic flavour This delicious Cob has been crafted by our Expert Bakers using a traditional 36 Hour Starter Dough. Vitamin D & Fibre All our bread loaves and rolls are a natural source of vitamin D and fibre, two nutrients which are usually low in our diets. There are few dietary sources of vitamin D, so our bread is made with yeast that naturally produces it. Vitamin D contributes to the maintenance of normal bones and teeth.