- 2 tablespoons soy sauce
- 2 tablespoons lime juice
- 2 tablespoons olive oil
- 1 tablespoon tomato paste
- 1 tablespoon fresh parsley, chopped
- 1 garlic clove, minced
- 1/2 teaspoon dried oregano, or 1 tablespoon chopped fresh
- 1/4 teaspoon freshly ground pepper
- 1 1/2 pounds tuna steaks