This is great with either leftover salmon or shrimp. One night we had a leftover salmon steak and another time we had extra boiled shrimp, it's great either way! I make my own pesto and have it ready frozen in ice cube forms, stored in zipper bags in the freezer. Lots of flavor from capers and olives (feel free to use Kalamata) create this extravagant meal from mere leftovers. Enjoy!