Flying Saucers or UFO's (depending on where you grew up), are a truly Retro Sweet that are still popular today.  Flying Saucers are round discs of wafer (rice paper) with a fruit flavoured sherbet centre. 
Ingredients: Sugar, Maize Starch, Dextorse, Acid (E334), Acidity Regulator (Sodium Hydrogen Carbonate), Flavourings, Colours (E100, E132, E162)