Leftover Prime Rib soup is a way to use those precious leftovers. Left over Prime Rib Bones 6-8 cups water 1 Tablespoon of better than Bullion Beef 1 1/2 cups dry red wine*see notes 1 1/2 -2 cups diced leftover prime rib 1 Tablespoon of olive oil 1 large onion sliced thinly 8 oz mushroom sliced 1-2 cloves garlic minced 1 1/2 cups diced potatoes of your choice I used petite golden Yukon Salt and Pepper to taste | Baked Broiled and Basted