- 6 tablespoon reduces-sodium soy sauce
- 1/4 cup (packed) fresh cilantro leaves
- 2 tablespoons mayonnaise
- 1 tablespoon oriental sesame oil
- 2 teaspoons rice vinegar
- 1 1-inch piece peeled fresh ginger, chopped
- 1/4 teaspoon cayenne pepper
- 1 12- to 14-ounce fresh tuna steal (about 1 inch thick)
- 2 bunches watercress, stems trimmed
- 1 bunch radishes, trimmed, sliced
- Sesame seeds
- Blend first 7 ingredients in processor until almost smooth. Pour 1/3 cup sauce into glass pie plate; add fish and turn to coat. Marinate fish 15 minutes per side. Reserve remaining sauce.
- Drain marinade from fish into heavy medium skillet. Cook over high heat until beginning to boil. Add fish and cook until just opaque in center, about 4 minutes per side. Transfer fish to cutting board; cut crosswise into 1/4-inch-thick slices.
- Combine watercress and radishes in large shallow bowl and toss to blend. Arrange fish slices over. Sprinkle with sesame seeds; serve with reserved sauce.