The Nedlands resident won two firsts and a third at last year�s cookery exhibition but his late wife�s top-secret relish recipe earned him the prize closest to his heart.
�Over the years we have lived in various houses with orange or lemon trees, so I started making jams just to save the fruit that dropped on the ground,� Mr Hopkins said.
�In 2010 I thought: �Let�s slip a couple of jars into the show and see what happens�.
�There were lots of quite formidable-looking ladies in big white coats. I thought I had encountered the Country Women�s Association mafia.
�They said my marmalade was �slightly burnt�, which hit me quite hard. It took me a while to get confident enough to go back and tackle it again.�
A year after his wife�s death, Mr Hopkins entered his tribute Grandma�s Relish, orange cognac marmalade and mustard in the 2014 Perth Royal Show.
�I nearly fell over when her relish won first prize,� he said.
�My five children and 11 grandchildren ask for it all the time; they are the ultimate taste testers. At the end of the day it�s all about having fun, being innovative and making something that you like.�
Mr Hopkins said he had created some new flavour combinations for this year�s competition.
The Perth Royal Show runs from September 26 to October 3.