Broccoli Soup

1 bunch broccoli (fresh or frozen)
1/4 c onion - chopped
3/4 c potato " "
4 T. butter
1 cube chicken bullion
1 1/2 c water
2 c milk
1 T flour - heaping
1 t. lemon juice
Shredded cheddar cheese

Clean and chop broccoli. Cook in 3/4 c water til tender. Melt butter in large pan. Add chopped potato and onion, then bullion. Cook until onions are clear. Add 1 1/2 cups water. Cook until potatoes are done. Add flour to milk in bowl. Mix well. Heat in microwave 2 minutes, stir. Add to cooked potatoes and onions. Add Lemon juice. Add broccoli. Take out 1 - 2 cups and puree. Add back to soup. Add shredded cheddar to taste. Add salt and pepper if desired.