Zebra Domes are a creation of the Boma restaurant at Disney's Animal Kingdom Lodge. They are found in the dessert section on the buffet, and have been one of the most popular items on the menu since opening day. The secret ingredient is Amarula Liquor.
Zebra Domes are found in unlimited quantities at Boma, and in packs of 5 at the Mara food court in Disney's Animal Kingdom Lodge. The 5 pack costs $3.69 (as of Feb 2009).