Arran Comet Potatoes This page first published: Aug 12, 2004 · Updated: Jun 1, 2018 · by CooksInfo. Copyright © 2021 · This web site may contain affiliate links · This web site generates income via ads · Information on this site is copyrighted. Taking whole pages for your website is theft and will be DCMA'd. See re-use information. Arran Comet Potatoes have white flesh and white skin, and mature early. They are grown in Wales, Scotland and England. Cooking Tips Boiling, frying.