Whenever I find myself in a previously un-visited Supermarket, Grocers', or Deli, there are certain aisles that I always visit.
The Charcuterie counter is always first to be inspected, then the canned fish dep't, then the place where you find Gherkins and Olives etc.
I really do try not to eat too much Charcuterie, but I am easily swayed by the sight of a new sexy looking Chorizo or Paté. As for the canned fish, I just adore tins of Squid, Octopus, Mussels, Anchovies, etc.
When it comes to Capers, if I find a new type, or brand, I'll always buy them. Some are just wonderful; others plain dull.
The ones on the right with the stems (above) are 'Fleurs de Capres'; picked just before it flowers, they are first dried then re-hydrated before being preserved in either vinegar or olive oil. The process is lengthy, and they are therefore quite expensive. The two other jars are the seeds left behind after flowering.
A year or so ago, when Wills and Kellogg returned to Australia, they left behind a half empty jar of Capers in their fridge. They were probably the most delicious I have yet tasted. Unfortunately I can't find them anywhere. I'm ashamed to say that I ate them by the spoonful; they were that good.
Capers always go into my simple meat/tomato sauces for Pasta, onto fried Pork chops, and into salads.
It's worth looking-out for new types; you may surprise yourself.