INGREDIENTS
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2 tbsp olive oil (divided)
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1 cup diced onions
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1 lb ground beef
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1 lb ground pork
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1/2 cup breadcrumbs
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2 large egg yolks
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1/4 tsp allspice
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1/2 tsp ground nutmeg (divided)
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1 tsp kosher salt (divided)
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1 tsp black pepper (divided)
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1/4 cup flour
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4 cups beef broth
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1/2 tsp lemon zest
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1 tbsp fresh parsley (chopped)
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1 cup sour cream