Here is a little recipe for one of my favorite seafood dishes...Ahi tuna.
Seared Ahi Tuna
* 2 (6-8 ounce) Ahi tuna steaks (3/4 of an inch thick)
* 2 Tbsp dark sesame oil
* 2 Tbsp soy sauce (or 2 teaspoons of wheat-free tamari for gluten-free option)
* 1 Tbsp of grated fresh ginger
* 1 clove garlic, minced
* 1 green onion (scallion) thinly sliced (a few slices reserved for garnish)
* 1 teaspoon lime juice
1 Mix the marinade ingredients together and coat the tuna steaks with the marinade, cover tightly, and refrigerate for at least an hour.
2 Heat a non-stick skillet over medium high to high heat. When the pan is hot, remove the tuna steaks from the marinade and sear them for a minute to a minute and a half on each side ( even a little longer if you want the tuna less rare than pictured.)
3 Remove from pan and slice into 1/4-inch thick slices. Sprinkle with a few green onion slices.
Recipe from: http://www.elise.com/recipes/archives/001681seared_ahi_tuna.php
The best Ahi tuna is served rare or even slightly medium rare. But anything over medium rare will dry out the tuna.