My grandmother use to make this fondue for the children, and it was very nice.
Method one
1 garlic clove, halved crosswise
1 tablespoon cornstarch
1/2 lb Emmental cheese, coarsely grated (2 cups)
1/2 lb Gruyère , coarsely grated (2 cups)
6 tbsp double cream
11/2 glass milk
Rub a pot with cut sides of garlic
Heat the pot, then add the cheese cubes
When it start melting add 1/2 of the double cream add the milk slowly stirring constantly and finish with the rest of the milk where you have
stir the cornstarch
Bring fondue to a simmer and cook, stirring, until thickened, 5 to 8 minutes.
Method 2
You can also replace the white vine with 1 tbsp white vinegar and add water, to make for the quantity of white wine you should use in your recipe