This recipe is from my Italian grandmother. The one change she made to get with the times was to use Ragu sauce instead of homemade, and she declared that it still tasted just as good. It's never failed to impress the people I make it for. My husband says these meatballs have forever ruined him to other people's, or even restaurant meatballs. The real secret is in the time you take to slowly cook the meatballs in the sauce. Don't skimp and just toss the sauce on and eat it. It will still taste good, but not anything like it should be. The raisins are meant to absorb the acidity and impart a little sweetness to the sauce. This recipe can easily be multiplied to feed more people.