Betta Bars were a rectangular bar of some sort of puffed rice (Puffa Puffa Rice - remember that?) covered in a sweet syrupy coating. They used to sell these at our local outdoor swimming pool and were always a huge treat after thee weekly swimming trip, along with a hot Bovril to warm you up. I think they were made by Matlows, but I've not seen them for years.
Do You Remember Betta Bars?
Do You Remember Betta Bars?