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2 tablespoons sherry vinegar |
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1/4 cup extra-virgin olive oil |
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2 plum tomatoes, halved, seeded and finely diced |
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1/4 cup chopped green olives |
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1 tablespoon capers, rinsed and drained |
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1/4 cup fresh basil leaves, chopped, plus 8 basil leaves for rubbing |
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4 swordfish steaks, each about 1 1/2-inches thick |
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Freshly ground black pepper |
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