Well.. one thing I often end up doing is.. eating them all right out of the can. They're nicer chilled, marinaded a bit and put in salads, or pasta, pizza.. made into dips..
But for your first time, just open and eat! The canned ones don't taste as strong as fresh, but you'll at least know if you like them or not. I'm a bit surprised you haven't seen them at vegetable stalls, there are usually loads in London.