1/4 c. olive oil
2 tbsp. lime juice
6 tuna steaks, about 6 oz. each
1 tbsp. dry mustard
2 tbsp. dried cilantro
1 tbsp. chili powder
1 tsp. freshly ground black pepper
1 tsp. black mustard seeds

Combine olive oil and lime juice, brush each steak with mixture. Mix remaining ingredients; sprinkle over steaks. Wrap and refrigerate for several hours. Grill over hot charcoal for 4 minutes per side, or until steaks just begin to flake. Do not dry out. Top with Lime and Soy Sauce. Serves 6.

LIME AND SOY SAUCE:

2 tbsp. lime juice
1 tbsp. champagne vinegar
1 tsp. soy sauce
1/4 c. olive oil
Lime juice to taste

Whisk together ingredients and spoon mixture over tuna steaks.