Creamola Foam I remember this really well as it was made a mile away from my house in rowntree mackintosh factory in hadfield.
Also a bit of history my father Graham Hampson & John Stephenson both made a machine for putting the steel tin lid on the tin, when I was about 7 (circ 1979) for rowntree mackintosh. This machine was then copied & patnened by metal box.