Italian Meatballs

1 lb ground beef
1/2 lb pork sausage, or ground pork
2 eggs, slightly beaten
1/3 c buttermilk
1 T water
3/4 c Italian breadcrumbs
1/4  onion, very finely minced
1/2-3/4 c thinly grated mozzarella
1 t minced garlic
Salt & pepper
1-2 t dried parsley

Preheat oven to 375.  In a bowl, combine eggs, buttermilk, water and breadcrumbs.  Let sit for 5-10 minutes.  Add onion, cheese, garlic, salt & pepper, and parsley.  Mix.  In another bowl, add both meats and mix gingerly with a large fork until just mixed (be careful not to mash it).  Add breadcrumb mixture and mix lightly and thoroughly.  Carefully form balls, about golf ball sized, and place on a lightly greased broiler pan.  Should make about 20.  Bake for 20-30 minutes, turning partway through, until done in the center.  Serve warm or let cool and freeze.