Peel the gnarly-looking roots with a swivel peeler or a paring knife. Thoroughly rinse them under running water. They will be extremely starchy and slippery (no matter how much you rinse, the slipperiness will never go away). Cut each root into 1-inch cubes. Place them in a medium-size saucepan, add water to cover, and bring to a boil over medium-high heat. Reduce the heat