To broil tuna steaks, place on broiler pan; broil 4 to 6 inches from heat using times above as a guide, turning once.
Cilantro, also called Chinese parsley, consists of the fresh leaves and stems of the coriander plant. Store cilantro in a plastic bag in the refrigerator.
Any mild-flavored salt-water fish steaks can be used in place of the tuna in this recipe. Try shark, halibut or sea bass.
Prepare the avocado mayonnaise up to four hours in advance; cover and refrigerate it.