use HTTP::Cookies;
         $cookie_jar = HTTP::Cookies->new(
           file => "$ENV{'HOME'}/lwp_cookies.dat',
           autosave => 1,
         );

         use LWP;
         my $browser = LWP::UserAgent->new;
         $browser->cookie_jar($cookie_jar);

       Or for an empty and temporary cookie jar:

         use LWP;
         my $browser = LWP::UserAgent->new;
         $browser->cookie_jar( {} );