2 tablespoons butter

1 small onion, finely diced

1 stalk celery, finely diced

3 cloves garlic, minced

2 cups broccoli (about 4 small heads) cut into very small pieces (you want them to fit on a spoon)

2 cups chicken stock (I used two chicken bouillon cubes dissolved in two cups of hot water)

2 cups milk

1/2 cup flour

1 cup grated cheddar cheese

Salt and white pepper