INGREDIENTS
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1/2 pounds beef sirloin (sliced thinly against the grain into strips)
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2 tablespoons olive oil
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1 1/2 cups shiitake mushrooms (stems removed, thinly sliced)
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1 1/2 cups cremini mushrooms (stems trimmed, thinly sliced)
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2 shallots (peeled, sliced)
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2 cloves garlic (peeled, grated)
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1/2 cup brandy or cognac
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1/2 cup beef stock
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3 tablespoons unsalted butter
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1 tablespoon Dijon mustard
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1 1/2 tablespoons Worcestershire
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1/4 cup parsley (finely chopped, to serve)
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Kosher salt and freshly ground black pepper (to taste)