1 T. minced shallots
1 T. lemon juice
1/4 tsp. coarsely ground black pepper
1/8 tsp. dried tarragon
1/8 tsp. dried oregano
1 (6-oz.) tuna steak (about 3/4 inch thick)
Cooking spray

Combine first 6 ingredients in a small dish; cover and marinate in refrigerator 30 minutes. Prepare grill or broiler. Place fish on grill rack or broiler pan coated with cooking spray. Cook 2 minutes on each side or until fish is done.