INGREDIENTS
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1 large yellow onion, grated through a cheese grater
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2 tablespoons butter
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2/3 cup milk
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4 slices bread, crusts removed and cut into pieces
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2 eggs
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1lb ground pork
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1 1/2lbs ground beef
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2 teaspoons salt
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1 teaspoon fresh nutmeg
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1/4 teaspoon ground allspice
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1 teaspoon ground cardamom
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1/2 teaspoon baking powder
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2 teaspoons black pepper
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SAUCE
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6 tablespoons butter
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1/3 cup flour
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1 quart beef stock
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1/2 cup sour cream
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1/2 tablespoon brown sugar
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salt
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2 teaspoons lemon juice