Combine all ingredients in a large mixing bowl and with the whisk attachment whip at a low speed for 1 minute, then medium speed for 1 minute, then high speed for 3 minutes, or until the mixture is thick, but light and fluffy, with semi-stiff peaks forming.
Spoon mixture into a loaf pan, cover with plastic wrap, and place in the freezer for 4 hours, or until firm.
Notes
In this recipe, cook time refers to time in the freezer.