What happened to chocolate in the 1950s and 1960s?
This graph from Google shows how frequently “chocolate” was mentioned in the vast Google Books archive.
As you can see, the proportion of books which mentioned chocolate took a nosedive in the mid-twentieth century:
Why?
Um, wasn’t it rationed for a fair chunk of that period?
Good point Richard. Though does rationing make you more or less likely to write about it – less of it about versus more longing for it?