1926–7 54/1 Chocolate..Nut (¼ lb. pkts.).
1955 M. Allingham xvi. 228 Offering Westy half a bar of nut chocolate.
1999 Christmas Eve Report in alt.support.diet (Usenet newsgroup) 25 Dec. I was almost full up so I only had some croccante..and two pieces of nut chocolate.