An email exchange with Wilkin and Sons produced an offer of replacement jars of Rubus gold as well as the below explanation of the difference between 'blackberry' and 'bramble'...
Our technical department have confirmed the following:
“It’s the same thing! Strictly speaking it should be blackberry jelly as the fruit of the bramble is the blackberry. I have always thought of brambles as being the prickly bushes on which blackberries grow! (Wikipedia agrees!) However bramble can also refer to the fruit of the bramble bush, i.e. the blackberry. “Bramble Jelly” is, I believe, a romanticised name for what should be blackberry jelly!”
I have to admire a technical department who are so passionate about their work that they can liberally sprinkle exclamation marks throughout their correspondence.
Wilkin and Sons were also happy for me to donate the unwanted Black currant jars to our local Foodbank which I consider is a generous and compassionate attitude for them to take.
This afternoon, a courier knocked on our door to deliver another package...
Oh, what dark and sweet delights could be hidden inside?
These beauties, that's what!
Nom, nom, nom.