Beer Cheese Soup I Recipe

½ cup chopped green onions

1 cup sliced celery

1 cup sliced carrots

8 ounces fresh mushrooms

sliced

¾ cup butter

½ cup all-purpose flour

1 teaspoon mustard powder

5 cups chicken broth

1 small head cauliflower

1 (12 fluid ounce) can or bottle beer

8 ounces sharp Cheddar cheese

shredded

2 tablespoons grated Parmesan cheese

salt to taste

ground black pepper to taste