place 1/2 Gal of IceCream in Large mixing bowl to soften. Leave the other (2) 1/2 gallons on the counter. Clean Habs. Place Habs in food processor and pulse a few times till roughly chopped. Add 2 cups softened Icecream and blend well. Transfer back to the mixing bolw (it'll be moslty liquid) using a stout wooden spoon, mix well. When well mixed add another 1/2Gal if IceCream and mix some more. When all mixed add the third 1/2Gal and continue mixing till thouroughly blended. Transsfer to a Bundt or Springform pan and place in Freezer over night. Remove from pan to serve.