Bring one small and one large pot of water to a boil; salt the water in the large pot. Use a paring knife to cut a ring around the equator of each chestnut. Plunge them into the small pot of boiling water for about 3 minutes, then turn off the heat, leaving the chestnuts in the water. Remove 2 or 3 chestnuts at a time and, using the knife and your fingers, peel off both she