|This isn't my recipe, but is the one I use all of the time. It is easy and delicious.
3 lbs tuna steaks Marinade
1 tablespoon brown sugar 1 tablespoon sesame oil 1/3 cup soy sauce 1/3 cup rice wine vinegar 2 garlic cloves, crushed and minced finely 1/4 inch fresh ginger, grated black pepper chili pepper flakes Directions
Put all marinade ingredients into a zip-lock bag shake and add tuna.
Zip and chill for 2 hours.
Place steaks on a clean, hot, oiled, grill. And marinade in pot and reduce to half.
And turn after 3 minutes and cook for three more minutes. Place on serving dish and pour reduced marinade over steaks.