This Cadbury concoction of raisins and chewy stuff and rum (0% proof) was available from 1971 to 1978.
The bar was advertised with a Cockney pie and mash style song:
“It’s amazin’ what raisins can do
All that goodness and it’s all fo’ you
You just ‘ave ta do what ya gotta do
It’s amazin’ what raisins can dooooooooo . . . Oi!”