As a youngster I got quite addicted to these - having been introduced to them by my first boyfriend. We used to go to the Wimpy Bar in Stamford and have these. They are very refreshing and great fun for the kids.
You can make your own vanilla ice cream for this or make your own.
1 Bottle of Fizzy Pop Pepsi, Coca Cola, Ice Cream Soda, Raspberryade, Limeade, Vimto Lemonade Ginger Beer
Taking a large knicker bocker glory type glass or very large tumber put two to three scoops of ice cream in the tumbler until you are about an inch from the top. Very slowly pour in the fizzy liquid of your choice. Be careful as the pop will explode and produce foam as it hits the ice cream so a steady hand is required. Provide a spoon and a straw and enjoy.
Very cooling on a hot day and because the liquid foams it can be unpredictable and decide that the glass is too small for it. So go steady but enjoy.