1/3 cup lemon juice
1/3 cup butter
1 teaspoon dried minced onion
2 teaspoons salt
1 teaspoon ground black pepper
2 tablespoons cold water
2 cloves garlic, minced
1 tablespoon dry balsamic vinegar
2 teaspoons dried oregano
1 teaspoon dried basil
Place lemon juice in a medium bowl; add butter, onions, salt, pepper, cold water and garlic. Mix gently.
Stir balsamic vinegar, oregano, basil and lemon juice into the mixture. Chill in refrigerator.
Preheat the grill for high heat, and lightly oil grate.
Arrange grilled fish on the prepared grill and grill about 1 minute on each side, or until fish flakes easily with a fork. Remove fish from grill, and place on flat side of the grill. Grill for 5 minutes on each side, or until pink and very crisp. Drain on paper, and serve immediately.