2 tablespoons unsalted butter
2 tablespoons all purpose flour
1 tablespoon cornstarch
1/2 cup whole milk
1 cup pale ale
1 teaspoon dry mustard powder
Dash hot pepper sauce
12 ounces cheddar cheese, grated
Adapted from ehow.com
Melt the butter in a sauce pan over medium high heat.
Whisk in the flour and cornstarch.
Whisk in the milk, pale ale, mustard powder and hot pepper sauce. Allow to come to a very low simmer but do not boil.
A handful at a time, add the cheese and whisk until completely melted before adding more cheese. Repeat until all the cheese has been added.
Add to a serving bowl and serve warm.