INGREDIENTS
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6 tablespoons olive oil
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6 tilapia fillets (about 1 pound), cut into 3/4-inch pieces
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1 tablespoon plus 3/4 tps kosher salt
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1 teaspoon ground black pepper
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1 ripe avocado, cut into 1/2-inch cubes
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1 mango, cut into 1/2-inch cubes
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2 tablespoons chopped cilantro
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3 scallions, white and pale green parts finely chopped
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2 cups (2 oz) packed baby arugula, coarsely chopped
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1 tablespoon fresh lime juice
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1 cup creme fraiche or sour cream
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2 tablespoons wasabi powder
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8 6 inches corn tortillas