Homestyle Hamburger Hash

1 lb lean ground beef
4 c frozen potatoes O'Brien(with onions and peppers) from 24 oz package
11 oz Mexicorn, undrained
3/4 cup water
1 tsp beef flavored instant boullion

Brown beef. drain. Add all other ingredients. Mix well. Reduce heat to med, cover and cook 20 min or until potatoes are tender. Season with salt and pepper