First - catch 'possum. hopefully a young one that has not been eating carrion, and it's diet has been persimmons, grapes, acorns and such.
whack 'possum in the head strongly - knock the 'daylights' out of him - you know what I mean. Slit throat and hang upside down to drain blood out. Boil large pot of water, when boiling dunk 'possum or pour water over. Scrape hair of 'possum as you would scrape a hog. Then remove feet, head and guts.
to cook, I recommend baking in a pre-heated oven at about 325* in a shallow roasting pan with back down, stuff cavity with cut-up sweet potatos, apples and sweet onions with a little red pepper aftersprinkling with salt. should roast for an hour & 3/4 or until well browned. If camping out use a dutch oven with lid on but careful, not too hot. serve with rice, field peas and cornbread.