pan, warm 1 cup milk, 1/4 c. butter, and 1/4 c. sugar over medium heat. don't let it boil, and only warm until butter is almost melted.
once the potato is cooked, pour off and reserve 1/4 cup of the water, and then combine the rest into mashed potatoes, without adding any milk, butter, or salt. you need 1/4 c. for this recipe.
meanwhile, in a separate bowl, combine the baking soda, baking powder, salt and yeast with 4 cups flour.
let the milk mixture cool, then when only luke warm, add 1 beaten egg, the 1/4 cup mashed potato, 1/4 cup potato water, and 3/4 teaspoon vanilla.
now for the fun part, which 