Cookies (not the ones you eat) are coded bits of information put on users website to recogise them for faster loading. They are used by internet banking sites to recogise the customer for added security. In addition they are used to see what pages are rmost read on a website like this one. It is understood that websites must approve of their use under a new European law.
A reader has written about their use (see Readers Letters) and an explanation has been given. There is, however, a means of blocking cookies - see: