I used to make sourbread with a starter that required a cup of starter, a cup of sugar, and a cup of starter. The three cups were put in a quart jar in fridge for several days then when I was ready to make bread I put the contends of the jar in a bowl, added 2 cups of potato water and flour. That sat over night. Then in the morning I took out a cup of started placed it in a qt jar added a cup of sugar then another cup of starter. This was the next batch of bread.
I made bread from what was left in the bowl after taking the starter. Has anyone have this recipe? I can't find it anywhere. So easy and so good.