Tuna with Tomatoes

This Moroccan recipe for tuna could also be prepared with cod, snapper, or another firm white fish. Leone Jaffin’s Algerian version omits preserved lemon and adds 2 small hot red peppers and a few rinsed capers. She fries the fish briefly to color it, then braises it covered with the sauce and serves the fish with steamed potatoes. Keep in mind that in the Mediterranean, tuna is not served rare; all recipes using this meaty fish cook it until opaque throughout.