Mix together all ingredients. Roll in short rolls.Wrap in aluminum foil (shiny side in). Refrigerate for 24 hours. Leave in foil and cook for 1 hour and 10 minutes at 350 degrees F.The last 15 minutes, open and remove foil.Cook on cooking rack.If fat hamburger is not available, increase the proportion of regular hamburger. Ask your butcher. Regular hamburger is considered 70 % to 80 % lean.