Every year at the end of spring, giant Atlantic bluefin tuna migrate from the ocean to the warmer waters of the Mediterranean sea to spawn. For centuries the fish were harvested along the Sicilian coast in an annual event known as the "mattanza." That tradition has all but disappeared now, due to overfishing, which has made the bluefin an endangered species. Thankfully, there is still sustainably-caught white tuna to enjoy. For this simple preparation, splurge on the best-quality canned tuna you can find (we like the Ortiz brand). Serve it on bruschetta, pasta, or even toss it with boiled potatoes.