What you need is a can of "Olde Frothingslosh Pale Stale Ale" whose slogan was "The Pale Stale Ale with the foam on the bottom."
Here are two cans:
Sir Reggie <http://i.ebayimg.com/00/s/MTIwMFgxNjAw/z/4awAAOxyEoFSVbx8/$T2eC16RHJGYE9nooh7zIBSVb)7R+eQ~~60_57.JPG>
and Miss Frothingslosh Fatima Yechburgh <http://i.ebayimg.com/00/s/MTAwMFg3NTA=/z/amkAAOxyVLNS7UIX/$_57.JPG>
Ron M