This dense cake was on the Christmas Day 2000 menu for Ann Bancroft and Liv Arnesen, friends and former teachers attempting to become the first women to ski across Antarctica. They consume approximately 5,000 calories a day to meet their bodies demand for fuel during their grueling trek of approximately 100 days in temperatures averaging minus 30 degrees Fahrenheit with winds gusting up to 100 miles per hour. The recipe is from Liv's Norwegian mother.