Pour a large kettleful of hot water into a convenient vessel, add a small shovelful of ashes and then put the 'possum in; turn the 'possum round until fur is loosened, and it can easily be scraped clean. Draw, remove head and feet, wash thoroughly; salt in and outside, let hang over night to freeze. Wash again and put in baking-pan with a little water; cover closely and put in oven to brown. Dust with pepper and baste frequently with dripping; have medium potatoes peeled and boiled tender in slightly salted water, adding butter and a little sugar. When tender, arrange potatoes around 'possum on hot platter with potatoes round him, and serve.