whipping cream tip

cream whips better if there's a little more of it.  the instructions on the carton say to use no more than what would be needed to go higher than 1/3 of the beaters.  at first i was pouring in about 1/2 inch of cream and it took a while to whip up.  but when i put in like 1-1/2 inches, it whipped up in no time--well, like 3 minutes.