2tablespoons all-purpose flourYou can use cornstarch
Preparing the cheese
Prepare the cheese by grating the cheese, slice it into small cubes. You will coat the cheese with flour, or cornstarch.
Preparing the Fondue
Place beer, garlic, dry mustard, and Worcestershire in the pot and combine well. Shred or cube the cheeses and toss with flour, coating the cheese well. (The flour will help thicken the sauce.)
When the beer mixture is warm, add one-third of the cheese and whisk very well. Once the cheese has been incorporated well continue to whisk in the cheese until it is all incorporated. Whisk until the cheese is smooth.
If you do not have a Fondue set, you can use wooden skewers to dip bread, and fruit into the fondue.