I replaced the tuna with salmon in this fresh spring salad.
Foodsecret : This Casero crustacean stock is made for Paella, do not even bother making the fish stock yourself. You can buy this in any Spanish specialty store. I use it to make risotto's etc. You can also buy the common fish stock version. It's thick, creamy, perfectly balanced, and when properly reduced gives the paella its creamy finish. It'll blow you away. You'll never look back.