Another winner from Food & Wine! I would make a few changes next time. First cook it a little less – once this rested it came out almost well done. Second, I would use ghee instead of butter – the butter burned pretty bad, it tasted yummy, but did not look pretty. Finally I would add the kumquats and jalapeños when I turned the fish over. Here is my version.
Two 6-ounce tuna steaks, cut 1 1/4 inches thick
4 TBSP ghee
1/4 c olive oil
2 TBSP lime juice
1 small jalapeño, minced
4 kumquats, thinly sliced
1/4 c mint leaves, torn
Season the tuna steaks with salt.
In a medium saucepan, melt the ghee in the olive oil and lime juice. Add the tuna steaks and cook them over moderate heat, turning once, until they’re rare, about 3 minutes. Half way through Stir in the minced jalapeño and sliced kumquats.
Transfer the tuna steaks to a carving board and slice them 1/3 inch thick, then arrange them on plates. Stir the torn mint into the sauce, spoon over the tuna and serve.