Pot Roast

3 lbs rump roast
1 onion
1 can beef gravy
veg. oil
2 cups wateer

In cast iron pot cover the bottom with oil heat over low setting till oil is hot
Place roast in pot and brown on all sides
Cut up onion and add to pan let the onion soften (don't brown)
Add 2 cups of water cover and let it come to a boil
lower the flame and cook for 3 hours (don't fully cover leave the cover a little cracked)
Keep checking and if the water gets low add a little more
In 1 1/2 hours turn the roast to the other side
15 minutes before the roast is done add the jar of gravy