1. Rub the inside of the fondue pot with the halved garlic clove, then discard the garlic.
2. Pour in the wine and lemon juice, and heat until hot but not boiling.
3. Gradually add the cheese, stirring constantly until melted and smooth.
4. In a small bowl, blend the cornstarch with the kirsch, then stir into the cheese mixture. Continue to cook, stirring, until thickened. Add nutmeg, salt, and pepper to taste.
5. Serve with bread cubes, vegetables, or other dippers of your choice.