Cookbook The term cookbook is a metaphor for talking about the way Pmwiki organizes topics that are related to customization of Pmwiki through markups, variables, trails etc. The Cookbook is a Pmwiki Group. The actual "how to" content is contained in a Recipe which is usually on one page. Thus the Cookbook group contains user contributed Recipes and a Recipe is a "HowTo". A cookbook is something one refers to frequently when one wants to know if someone has contributed a way to do something when working with PmWiki.