White Sandwich Sourdough Bread is a different kind of sourdough - it's quite mild in flavour, also quite light. It contains no refined yeast, and most importantly has a very fine texture. So it's ideal for sandwiches!
It's unlike other recipes here, as it starts from a sourdough sponge, and gradually becomes a dough over quite a few additions of flour. I've done it with four stages here, because it's workable and easy. The recipe takes about 12 - 18 hours from whoa to go. Instead of an intermediate proof, it just ripens as it goes - by the final proof (in the tins) it'll just rise up and be ready to bake within an hour or so.