Ingredients:  
    1 pound fully cooked kielbasa, cut into 1/2-inch slices
    2 cups beer
    8 ounces shredded sharp natural Cheddar cheese
    2 cups shredded natural Swiss cheese
    2 Tbsp all-purpose flour
    1/2 tsp dry mustard
    1/4 tsp pepper
    1 clove garlic, cut in half
    1/8 tsp red pepper sauce

Preparation:
Heat kielbasa and 1/2 cup beer to boiling; reduce heat. Simmer uncovered 10 minutes; drain.

Toss Cheddar cheese, Swiss cheese, flour, mustard, and pepper]pepper[/link] until cheese is coated. Rub bottom and side of 2-quart heavy saucepan or skillet with cut clove of garlic. Add remaining beer. Heat over low heat until bubbles rise to surface. Add cheese mixture, about 1 cup at a time and stirring after each addition, until cheese is melted and mixture is smooth. Stir in pepper sauce.

Remove to ceramic fondue dish and keep warm over low heat. Spear kielbasa with long-handled forks; dip and swirl in fondue with stirring motion. If fondue becomes too thick, stir in additional heated beer.

Preparation Time:  10 min

Cooking Time:  20 min

Source:  http://homecooking.about.com