Thick Beer-Cheese Soup - cooking recipe

Ingredients

1 cup celery, chopped fine
1 cup onion, chopped fine
3/4 cup oil
1 1/2 cups flour
2 cups milk or 2 cups half-and-half
3 cups chicken stock
2 tablespoons mustard powder
1 tablespoon Worcestershire sauce
black pepper
1 dash Tabasco sauce
1 teaspoon salt
1 1/2 lbs sharp cheddar cheese, grated (or less)
18 ounces beer

Preparation

Saute celery and onions in oil until transparent.
Add flour and cook about 7 mins (do not let onions get brown).
Add milk, chicken stock, mustard powder, Worcestershire sauce, pepper, Tabasco and salt.
Cook, about 45 mins on low heat.
Add the shredded cheese; mix well.
Add the beer; mix.
Heat through (do not boil).