Meat gravy (from babcia C)

2 lb beef, 2 lb pork - cut them up into cubes & then brown them in butter
1 chopped onion - saute the onion in butter until tender
2 ts. salt
pepper
water
beef bullion - optional

Put in your crock pot all of the ingredients - low for 10 hrs.
Dissolve some flour with water & add to the pot, cook additional 15 min.

Great with "kopytka" or "kluski na parze"