reading multiple cookies

I want to read multiple cookies, there names al start whith PLUG but al 
whit a diverent number like PLUG10 and PLUG14 and zo on.
These cookies al contain data in the same format like 
name|price|amount|number|

Now I want to read these cookies and display them in a html page 
generated bij perl.

I know how to read 1 cookie but the number of the cookie is never the 
same, zo i must read all the cookies starting whit PLUG and remember 
the number after the name for later deletings or changing of a cookie.

Thanks