Potato Starter
It is amazing the things that we throw away that are more useful than we know. In this case, that water you boiled potatoes in for dinner is one of the fastest ways to make a starter for your bread. Simply take a cup and a half of the potato water, add a tablespoon of sugar, and stir in flour until stiff. Cover and leave overnight in a warm place. If it is nice and bubbly the next morning it is ready to use. If not—start over.
Alternatively, if you do not usually boil your potatoes, or just want to try something different, cheat a little. Use one packet of store bought yeast (1 tablespoon), mix with a cup of water, a half-cup of sugar, and three tablespoons of instant potato flakes. Let it stand for 24 hours, then put it in the fridge. Feed every four days, but instead of the usual flour and water combo, use the same amounts of sugar, potato flakes, and water that you used to create the starter