INGREDIENTS
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For the asparagus pesto:
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1/2 tsp. salt, plus more, to taste
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3/4 lb. (375 g) asparagus, trimmed
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3 Tbs. pine nuts
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2 garlic cloves
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Grated zest of 1 lemon
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1/2 cup (2 oz./60 g) grated Parmigiano-Reggiano cheese
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6 Tbs. (3 fl. oz./90 ml) olive oil
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For the flank steak:
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1 to 1 3/4 lb. (500 to 875 g) flank steak, butterflied
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Salt and freshly ground pepper, to taste
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2 tsp. olive oil