The Sourdough Starter recipe I used: Day 1: 120g flour & 120 g water Day 2: stir Days 3-7: stir, discard all but 2T, stir in 60g flour & 60g water Day 8: stir, discard, feed 60g flour & 60g water, wait 2+ hours for it to double in size, then you can use it to bake