As you begin to bake different types of breads, you will come across some older bread recipes that call for potato water. Potato water is the water that potatoes have been boiled in. The potatoes release their starchy goodness into the water as they are cooked. The potato water can then be used as a substitute for milk and it makes your bread deliciously moist.
To make potato water, wash and peel 2 to 3 potatoes. Cube the potatoes and add to pot. Cover potato cubes with water and boil for about 20 minutes or until potatoes are soft. Remove from heat and drain potato water into a liquid measuring cup. Let cool to warm before using in your recipe. The potatoes can be mashed with a forked and added to potato bread recipes.
Potato water can be refrigerated for up to 24 hours. After this time, the potato water sweetens and can spoil the taste of your bread.