INGREDIENTS
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1 onion, roughly chopped
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1 large carrot, roughly chopped
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2 celery stalks, roughly chopped into 1" pieces
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1/4 c. chopped parsley, plus more for garnish
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2 garlic cloves, roughly chopped
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Kosher salt
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Freshly ground black pepper
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1 tbsp. tomato paste
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1/2 c. panko (Japanese bread crumbs)
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1 egg, beaten
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1/2 c. ketchup, plus 4 tbsp. for glaze
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1 lb. ground beef
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1 lb. ground pork
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1 lb. asparagus, cleaned and trimmed