How to make classic Swiss cheese fondue at home — the best cheeses, why wine and cornstarch matter, and how to avoid a grainy, separated pot.
Cheese fondue is one of the most convivial dishes there is — a communal pot of melted cheese for dipping bread and more. Made well, it's silky and rich; made poorly, it turns into a stringy or grainy mess. Here's how to make a perfect classic Swiss fondue at home.
The Classic Cheeses
Traditional Swiss fondue uses a blend of firm Alpine cheeses, above all Gruyère, often combined with Emmental. Gruyère brings depth and nutty flavor, while Emmental adds mild sweetness and smooth melt. Other Alpine cheeses like Appenzeller, Vacherin Fribourgeois, or Comté can be blended in. Use good-quality cheese and grate it yourself — pre-shredded cheese won't melt as smoothly. A common ratio is roughly equal parts Gruyère and Emmental, around 200g of cheese per person.
Why Wine and Acid Matter
Fondue is made with dry white wine, and the wine does more than add flavor. Its acidity keeps the cheese proteins from clumping, helping the fondue stay smooth. A crisp, dry white like a Swiss Fendant, Sauvignon Blanc, or dry Riesling works well. A splash of lemon juice can boost the acidity further. Many recipes also add a shot of kirsch (cherry brandy) for traditional flavor.
The Cornstarch Trick
The secret to a stable, smooth fondue is starch. Toss the grated cheese with a tablespoon or so of cornstarch (or flour) before melting. The starch coats the cheese and helps emulsify the fat and liquid, preventing the dreaded separation into a greasy, stringy mess. This simple step is key to a velvety pot.
The Method
Rub the inside of the fondue pot (or a heavy saucepan) with a cut garlic clove for flavor. Warm the wine gently over medium-low heat until steaming but not boiling. Add the cornstarch-coated cheese a handful at a time, stirring constantly in a figure-eight motion, letting each addition melt before adding more. Keep the heat gentle — overheating causes separation. Once smooth, stir in kirsch, a little lemon juice, and seasonings like nutmeg and pepper.
Serving Fondue
Transfer the pot to a fondue burner at the table to keep it gently warm. The classic dipper is cubes of crusty bread (with a bit of crust on each piece so it stays on the fork), but boiled potatoes, apple and pear slices, cornichons, and blanched vegetables are all excellent. Stir occasionally as you dip to keep the fondue smooth. The toasty crust that forms at the bottom — la religieuse — is a prized treat at the end.
Troubleshooting
If the fondue gets stringy or separates, it likely overheated or lacked acid or starch. Lower the heat and whisk in a little more acidulated liquid (wine with lemon) or a slurry of cornstarch and wine to bring it back together. Keep the heat gentle throughout to avoid the problem in the first place.
Frequently Asked Questions
What cheese is best for fondue?
Swiss Alpine cheeses, especially Gruyère, usually blended with Emmental and sometimes Appenzeller or Comté, grated fresh.
Why add cornstarch to fondue?
The starch helps emulsify the fat and liquid, keeping the fondue smooth and preventing it from separating into a greasy, stringy mess.
Why does my fondue separate?
Usually from too much heat or too little acid or starch. Keep the heat gentle, use dry white wine, and toss the cheese with cornstarch.