Would cookbooks qualify as equipment for modifier puposes? I.e., would someone who understands cookbook terms be able to gain a modifier to their roll by using one? I.e. would a gourmet cookbook give you a bonus to gourmet cooking rolls? Furthermore would understanding the recipe give a bonus to the roll? If it does, then how much of a bonus to the roll would it give?
Some basic understanding of cookery would probably help though. I naturally mean as to improve your cooking roll of course. I do know that Gurps magic items 2 had some enchanted cookbooks, would they (if properly enchanted) give a bonus to a cooking roll?