INGREDIENTS
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1 head escarole, about 1 pound
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1/4 cup extra-virgin olive oil
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1 tablespoon unsalted butter
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4 garlic cloves, sliced
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1/2 teaspoon red pepper flakes
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2 bay leaves
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1/2 lemon, cut in thin slices
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2 cups water or chicken broth
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Pinch sugar
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Kosher salt and freshly ground black pepper