
There are many reasons why your fondue cheese might not be melting. Firstly, it's important to use a good melting cheese, such as Gruyère or Emmentaler, as processed cheese will be unstable and inconsistent. The heat should be kept low and consistent, as sudden changes in temperature will cause the cheese to ball up or become stringy. The cheese should be shredded, grated or cubed into small, evenly sized pieces so that they melt evenly. You should also ensure that there is enough liquid, usually wine, to dilute the cheese and prevent stringiness. The acid in wine helps to prevent the proteins in the cheese from clumping together. If your fondue has already split, you can add cornstarch or cornflour to re-emulsify the mixture.
| Characteristics | Values |
|---|---|
| Temperature | Keep the temperature low and consistent. Sudden changes in temperature will cause the cheese to ball up or become stringy. |
| Type of Cheese | Use good quality cheese, such as Gruyere and Emmentaler, which melt properly. Avoid processed cheese, as it is unstable and inconsistent. |
| Liquids | Ensure there is enough liquid, such as wine, to create space between the proteins and prevent stringiness. |
| pH Level | Keep the pH level low to limit casein-calcium interactions, which cause stringiness. |
| Acidic Wine | Use a dry, slightly acidic wine to denature and separate the proteins in the cheese, giving the fondue a stringy quality. |
| Cornstarch | Add cornstarch (cornflour) to the fondue to act as a thickening agent and help remove lumps. |
| Lemon Juice | Add lemon juice to restore the texture of the fondue if the cheese has turned into hard lumps. |
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What You'll Learn
- The cheese may have been subjected to high or low heat
- The fondue pot was not warmed on a stove before being transferred to a tabletop heat source
- The cheese was not shredded, grated, or cubed into small, evenly-sized pieces
- The cheese mixture was not stirred slowly in a zig-zag pattern when added to the wine mixture
- The fondue was not made with an acidic liquid like wine, which prevents stringiness

The cheese may have been subjected to high or low heat
Cheese fondue is usually made with a combination of fontina, Gruyère, or gouda cheeses. The cheese should be shredded, grated, or cubed into small, evenly sized pieces so that they melt evenly. The cheese should be stirred slowly but constantly as it is heated. The pot only needs to be hot enough to melt the cheese, not boil it.
The acid in wine helps prevent the proteins in cheese from clumping together, so an acidic white wine will help dissolve any lumps. To get rid of lumps, you can also add a teaspoon of cornstarch to a tablespoon of lemon juice and white wine, then add the mixture to the fondue and stir.
If the fondue has split and looks greasy but not lumpy, adding extra cornflour (cornstarch) will help to re-emulsify the mixture. Mix a tablespoon of cornflour with a tablespoon of cold water and stir this into the fondue a little at a time, until the fondue comes together.
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The fondue pot was not warmed on a stove before being transferred to a tabletop heat source
When making cheese fondue, it is important to warm the pot on a stove before transferring it to a tabletop heat source. This is because cheese fondue needs to be cooked over low heat to achieve the right consistency. By warming the fondue pot on a stove first, you can ensure that the cheese melts slowly and steadily, reducing the chances of lumps forming.
If the fondue pot is not warmed on a stove first, the cheese may not melt properly when transferred to the tabletop heat source. The heat from the tabletop burner may be too concentrated or intense, causing the cheese to overcook or burn without melting properly. This can result in a lumpy or stringy fondue that is not ideal for dipping.
Additionally, starting with a cold or room-temperature fondue can affect the interaction between the cheese and the liquid used, typically wine. Warming the fondue pot on the stove first allows you to gradually add the cheese to the warm liquid, ensuring that the fat in the cheese melts and the proteins move freely, resulting in a smooth and creamy fondue.
To prevent lumps and achieve the desired consistency, it is crucial to warm the fondue pot on the stove before transferring it to a tabletop heat source. This extra step ensures that the cheese melts evenly and gradually, creating the perfect melted cheese fondue for dipping.
Therefore, if you are experiencing issues with your cheese not melting properly in your fondue pot, it is recommended to start by warming the pot on a stove over low heat before transferring it to your tabletop heat source. This simple adjustment can make a significant difference in the outcome of your cheese fondue.
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The cheese was not shredded, grated, or cubed into small, evenly-sized pieces
If your cheese fondue isn't melting, it may be because your cheese was not shredded, grated, or cubed into small, evenly-sized pieces. When making cheese fondue, it's important to ensure that the cheese is in small, even-sized pieces to promote even melting. Large chunks of cheese will not melt evenly, resulting in a lumpy fondue.
Cheese fondue is made by melting cheese and combining it with other ingredients, such as wine, to create a creamy, dip-able consistency. The cheese needs to be melted slowly and evenly to achieve the desired smooth texture. If the cheese is in large pieces, some parts may melt too quickly, resulting in lumps or clumps of cheese that haven't fully melted.
To avoid this issue, it's best to shred, grate, or cube the cheese into small, evenly-sized pieces before adding it to the fondue pot. By doing so, you increase the surface area of the cheese, allowing it to melt more evenly and reducing the chances of lumps forming.
Additionally, when adding the cheese to the rest of the ingredients, it's important to do so gradually and slowly. This gives the cheese time to melt properly and reduces the likelihood of it burning or scorching. A gentle heat is crucial, as high temperatures can cause the cheese to separate or become stringy.
By taking the time to prepare the cheese properly and adding it gradually to a low and consistent heat source, you can avoid the issue of unmelted cheese and achieve a smooth and creamy fondue.
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The cheese mixture was not stirred slowly in a zig-zag pattern when added to the wine mixture
When making fondue, it is important to stir the cheese mixture slowly and in a zig-zag pattern when adding it to the wine mixture. This technique helps to prevent the cheese from balling up or seizing, which can lead to a lumpy fondue. The zig-zag motion also helps to incorporate the cheese into the wine mixture gradually, ensuring that it melts smoothly and evenly.
If the cheese is added too quickly or stirred too vigorously, it can cause the fat in the cheese to separate from the proteins, resulting in a stringy or clumpy texture. This is because the proteins in cheese, called casein proteins, can form large stringy networks when they interact with calcium ions. By stirring slowly and in a zig-zag pattern, you give the cheese time to melt gradually and reduce the chances of these protein networks forming.
Additionally, the zig-zag stirring pattern helps to distribute the heat evenly throughout the mixture. This is important because fondue needs to be kept within a specific temperature range—below the boiling point but above the melting point of cheese. If the fondue gets too hot, the cheese can separate and become stringy or lumpy. By stirring in a zig-zag pattern, you can prevent hot spots from forming and maintain a more consistent temperature throughout the fondue.
Furthermore, the slow and zig-zag stirring technique helps to incorporate the other ingredients in the fondue, such as cornstarch, lemon juice, and spices. These ingredients are essential for thickening the fondue, enhancing its flavour, and stabilizing the sauce to prevent separation. By stirring slowly and in a zig-zag pattern, you ensure that these ingredients are evenly distributed throughout the fondue, resulting in a smoother and more consistent texture.
In summary, stirring the cheese mixture slowly and in a zig-zag pattern when adding it to the wine mixture is crucial for achieving a smooth and creamy fondue. It helps to prevent lumps, stringiness, and separation by gradually melting the cheese, distributing heat evenly, and incorporating all the ingredients effectively.
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The fondue was not made with an acidic liquid like wine, which prevents stringiness
The key to achieving a smooth and creamy fondue lies in managing the ingredients well to prevent the formation of stringy cheese networks. A crucial step is adding an acidic liquid like wine, which lowers the pH level of the mixture. This reduced pH environment impacts the net charge of casein proteins, making them neutral. As a result, these proteins are less attracted to positively charged calcium ions, reducing their interaction and subsequent clumping.
Wine, with its desirable acidity level, is traditionally used in cheese fondue, enhancing both flavour and texture. Its natural tartaric acid content prevents casein proteins from clumping together, ensuring a smooth fondue. However, other acidic liquids can also be used, such as lemon juice, which provides a bright flavour that balances the richness of the cheese. Additionally, lemon juice helps stabilise the emulsion of melted cheese and wine.
When preparing fondue, it is essential to gradually add the cheese to the warmed acidic liquid, allowing the fat in the cheese to melt and the proteins to move freely and spread out within the liquid. This technique further reduces the likelihood of protein clumping and stringiness. While wine is effective, other alcoholic beverages like beer can also be used, as alcohol can cut protein chains, resulting in a dip-able and less stringy fondue.
To further enhance the smoothness of the fondue, starch can be added. Corn starch, potato starch, or wheat flour can be combined with water and heated to form a starchy slurry that coats proteins and fat, preventing their interaction and clumping. Additionally, ready-to-heat cheese fondue sachets are available, which include phosphates as emulsifiers to promote melting and minimise the chances of stringiness.
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Frequently asked questions
Your fondue cheese may not be melting because the heat is too low. Keep the cheese fondue pot on the stove and warm it on low heat. If it has been heating for a while and is still runny, try raising the heat a little.
Fondue cheese needs to be kept below the boiling point but above the melting point. Most cheese fondues should be served at 120 degrees to properly melt the cheese while preventing it from burning.
Good cheeses for fondue are those that melt properly, such as Gruyere and Emmentaler. Processed cheese will be unstable and inconsistent.
Wine is a crucial ingredient in cheese fondue as its acidity lowers the pH level, preventing the casein proteins from bonding with calcium and forming stringy networks. You can also add cornstarch to help thicken the mixture.

























