2 boneless tuna steaks (1/4 lb. each)
1 tbsp. each: reduced-sodium soy sauce, rice vinegar
1/8 tsp. ground ginger
1 tbsp. whipped butter, softened and divided
1/2 tsp. powdered mustard

In a container (not aluminum) that is large enough to hold tuna in a single layer, arrange tuna. Combine soy sauce, vinegar and ginger; pour over tuna. Let stand 5 minutes; turn tuna over and let stand 5 minutes longer.

In a cup or small bowl, combine 2 teaspoons butter and the mustard; mix until combined. Cover and refrigerate until ready to serve.

Melt the remaining teaspoon of butter and brush on the tuna steaks. Place on a heated grill for about 2 minutes; turn tuna over and drizzle with any remaining marinade. Cook 2 minutes longer.

Serve steaks topped with the butter/mustard mixture. This is a great way to use Market Day tuna steaks! Makes 2 servings.