Shred the cheese into a large bowl. Add the cornstarch and toss. Set aside.
Cut the garlic clove in half and rub it along the entire inside of the fondue pot. Over medium heat, add the white wine and lemon juice. Bring to a simmer.
Gradually add in the shredded cheese, stirring constantly. The cheese should melt until smooth. Mix in the pepper and nutmeg. Serve with an assortment of dippers with fondue forks or skewers!