fetch returns an associative array consisting of all cookies returned by the browser. The keys of the array are the cookie names. You can iterate through the cookies this way:

        %cookies = fetch CGI::Cookie;
        foreach (keys %cookies) {
           do_something($cookies{$_});
        }
value()

Get or set the cookie's value. Example: 

        $value = $c->value;
        @new_value = $c->value(['a','b','c','d']);

value() is context sensitive. In an array context it will return the current value of the cookie as an array. In a scalar context it will return the first value of a multivalued cookie.

expires()

Get or set the cookie's expiration time.