"Tilapia Tacos With Cucumber Relish..."
INGREDIENTS
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1 tablespoon olive oil, plus more for the grill
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4 6-ounce tilapia fillets
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1 teaspoon ground coriander
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kosher salt and black pepper
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6 radishes, sliced
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1 cucumber, halved and sliced
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2 tablespoons fresh lime juice, plus lime wedges for serving
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8 corn tortillas, warmed
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1 cup fresh cilantro leaves
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1/4 cup sour cream