INGREDIENTS
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1/4 cup Extra Virgin Olive Oil
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2 tablespoons Butter
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2 medium Onions (finely chopped)
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4 ribs Celery (finely chopped)
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2 Carrots (finely chopped)
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5 Garlic cloves (sliced)
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1 pound ground Pork
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1 pound ground Beef
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4 ounces Pancetta or Slab Bacon (run through the medium holes of the butcher's grinder