Chef John's Cornish Pasty
Ingredients:
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4 cups bread flour
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3 ounces cold lard
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2 ounces cold butter
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1 ½ teaspoons salt
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⅔ cup ice water, or as needed
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12 ounces beef skirt steak, cubed
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1 cup diced Yukon Gold potatoes
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½ cup diced onion
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⅓ cup diced turnip
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1 ½ teaspoons salt
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1 teaspoon freshly ground black pepper
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1 pinch cayenne pepper
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2 tablespoons butter, cut into 8 thin slices
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1 large egg, beaten
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1 teaspoon water