Having only eaten walnuts sporadically I was intrigued to find although the nut has culinary use, the shells are used for making dynamite, oil paint, plastics and helping to drill oil wells. I am sure the dynamite discovery must have come from some lateral thinker watching the walnuts 'explode' from their husks before falling to the ground.
The walnuts (roasted) go well with Parmigiano-Reggiano cheese and Champagne...
...but if you desire something tasty on a smaller budget try this salad from Ruth Pretty
Expecting to find handfuls of ripe Damson plums on our tree recently I was shocked to find an empty tree, footsteps underneath and a plastic shopping bag flapping around. Security has been discussed subsequently (has anyone got suggestions?). At least the Granny Smiths and walnuts are still to look forward to. This post has recipes for walnuts.