Add no water. It will make it's own juice. A good way to get flavorful juice is to take a pack dry liptons beefy onion or beefy mushroom soup mix and sprinkle on the top. Remember to put the side with the most fat down on the bottom. When done take the juice off the meat and put in a pan bring to boil and let it boil down . Mix 3 tbs corn starch with 1 cup of water and whisp in to boiling mixture slowly until thickened. Makes a great gravy. Also you can put carrots, onions, chunked potatoes and cabbage in the crock pot too and then you have a whole meal. I use baby carrots. Left overs make a great stew.