TOSS cheese with flour in medium bowl; set aside. Rub inside of heavy saucepan with garlic; discard garlic. Add wine; heat until bubbles rise to surface. (Do not boil.)
ADD 1/2 cup of the cheese mixture; stir constantly with wooden spoon until cheese is melted. Repeat until all of the cheese has been added. Continue to stir on medium-low heat until cheese mixture thickens. Stir in kirsch and seasonings.
TRANSFER fondue to heated fondue pot. Keep fondue bubbling while serving. Dip bread chunks into fondue. If fondue becomes too thick, add small amount of additional wine.