
Blue cheese is a type of cheese characterised by its blue veins, which are created by the addition of mould spores to the milk mixture. Blue cheese is typically gluten-free, as cheese is a naturally gluten-free food. However, there is some controversy surrounding the gluten content of blue cheese, as some of the moulds used in its production are grown on gluten-based bread. This has led to concerns about the potential presence of gluten in blue cheese, with some individuals reporting adverse reactions after consuming it. The FDA allows food products to be labelled gluten-free if they contain less than 20 parts per million (ppm) of gluten, which is the lowest detectable amount with current scientific tools. While most blue cheeses are unlikely to contain significant amounts of gluten, it is important for consumers to read labels, verify the gluten content, and make informed choices based on their sensitivity and tolerance levels.
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What You'll Learn
- Blue cheese is made using mould spores grown on rye or wheat bread
- Most blue cheese is gluten-free, but some varieties may contain gluten
- People with coeliac disease should avoid gluten entirely
- Some people report adverse reactions to blue cheese
- Modern cheese-making techniques have made bread obsolete as a mould-growing medium

Blue cheese is made using mould spores grown on rye or wheat bread
Blue cheese is a food with a gluten-free controversy. Most blue cheese is gluten-free as mould spores are added to the milk mixture to make it, and it rarely contains more than 20 parts per million (ppm) gluten. However, these spores are sometimes grown on rye or wheat bread, which naturally contain gluten.
The FDA allows processed and packaged food to be labelled "gluten-free" if it contains no wheat, rye, barley, or any crossbreeds of these grains. It must contain less than 20ppm gluten to be considered gluten-free.
Some people have reported adverse reactions to consuming blue cheese, which they attribute to the presence of gluten. However, it is important to note that the body's reaction to blue cheese may depend on various factors, including the level of sensitivity and the manufacturing process.
To ensure that blue cheese is gluten-free, it is advisable to check the labels and verify the ingredients. Some manufacturers may use gluten in their cheese spreads or shredded cheese products to improve consistency or prevent clumping.
It is worth noting that those with celiac disease should strictly avoid gluten, even in small amounts, as it can damage the intestinal lining.
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Most blue cheese is gluten-free, but some varieties may contain gluten
Blue cheese is a type of cheese that is often sought after for its strong flavour and unique appearance. It is made using mould spores, which are sometimes grown on rye or wheat bread. For those who are gluten intolerant or have coeliac disease, consuming gluten can lead to adverse reactions, so it is important to know whether blue cheese is gluten-free or not.
Most blue cheese is gluten-free, but there is an ongoing controversy about the presence of gluten in some varieties. The concern arises because certain moulds used in the cheese-making process are grown on gluten-containing bread. This has led to confusion and uncertainty among consumers, with some reporting reactions to blue cheese even when it is labelled as gluten-free.
It is important to understand that gluten is a type of protein found in wheat, barley, and rye. The FDA allows food to be labelled "gluten-free" if it contains no wheat, rye, barley, or their crossbreeds and has less than 20 parts per million (ppm) of gluten. While most blue cheese falls within this category, there may be exceptions, especially with traditional cheese-making methods.
To ensure you are consuming gluten-free blue cheese, it is recommended to verify the manufacturing process and ingredients. Some companies clearly state on their websites that their blue cheeses are gluten-free, so it is worth checking before purchasing. Additionally, reading labels is crucial, as gluten can sometimes be added to cheese products for texture or consistency.
In conclusion, while most blue cheese is gluten-free, it is important to remain cautious and informed. The potential presence of gluten in blue cheese underscores the necessity of vigilance for those with gluten intolerance or coeliac disease. By being aware of the manufacturing processes, checking labels, and staying informed about gluten-free options, individuals can make informed choices and safely enjoy blue cheese as part of their diet.
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People with coeliac disease should avoid gluten entirely
Most blue cheese is gluten-free. However, the process of making blue cheese involves adding mould spores to the milk mixture, and these spores are sometimes grown on rye or wheat bread. Nevertheless, blue cheese rarely contains more than 20 parts per million (ppm) of gluten, the maximum amount a product can contain to be labelled "gluten-free" in the US.
Therefore, the treatment for coeliac disease is a lifelong gluten-free diet, which allows the lining of the small intestine to recover. People with coeliac disease must stop eating all sources of gluten, including barley, rye, and wheat, as well as foods that contain them, such as farina, semolina, durum, and couscous. It is important to note that even trace amounts of gluten can trigger a reaction, so reading labels and being cautious with potentially contaminated foods is crucial. Cross-contamination during food preparation, cooking, and serving should also be avoided.
While it may seem challenging to eliminate gluten entirely, a GP or dietitian can provide support and advice to help manage this significant adjustment. They can ensure that the diet remains balanced and includes all the necessary nutrients. Additionally, support groups, such as Coeliac UK or Coeliac Australia, can provide valuable information and resources for those navigating a gluten-free lifestyle.
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Some people report adverse reactions to blue cheese
Most blue cheese is gluten-free. However, some people report adverse reactions to blue cheese. This could be due to several reasons. Firstly, blue cheese is made by adding mould spores to milk to induce fermentation. These spores are sometimes grown on rye or wheat bread, which contain gluten. Although blue cheese rarely exceeds 20 parts per million (ppm) of gluten, which is the FDA limit for a product to be considered gluten-free, some people with gluten sensitivities may still react to this small amount.
Secondly, some people may be allergic to the Penicillium mould in blue cheese. While this mould is non-toxic and safe for human consumption, it can cause allergic reactions in some individuals. Symptoms of a Penicillium allergy may include itching, hives, and other respiratory or digestive issues.
Thirdly, blue cheese is high in fat, calories, and sodium, and overconsumption can lead to increased cholesterol levels and a higher risk of heart disease. Therefore, people with cardiovascular issues or those trying to maintain a calorie-controlled diet may experience adverse effects from eating blue cheese in excess.
Finally, blue cheese, like other fermented dairy products, contains lactic acid bacteria, which may cause digestive issues for some individuals. While these bacteria are beneficial for gut health and can boost cognitive function, they can also lead to temporary discomfort or intolerance in some people.
It is important to note that individual responses to blue cheese may vary, and those with specific dietary restrictions or allergies should consult a healthcare professional or dietician for personalised advice.
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Modern cheese-making techniques have made bread obsolete as a mould-growing medium
Blue cheese is mostly gluten-free. However, the mould spores used in its production are sometimes grown on rye or wheat bread. Nevertheless, blue cheese rarely surpasses 20 parts per million (ppm) of gluten, which is the maximum amount allowed by the FDA for a product to be labelled "gluten-free".
Modern cheesemaking techniques have rendered bread obsolete as a mould-growing medium. The process of cheesemaking has been standardised, with cheesemakers warming milk to a specific temperature and adding starter cultures to induce the growth of good bacteria and prevent the growth of undesirable bacteria. This process, known as direct acidification, involves adding acids such as vinegar or citric acid directly to the milk to achieve the desired acidity. This method is commonly used for cheeses such as ricotta and mascarpone.
Another technique employed in modern cheesemaking is the use of milk analysis, which has helped demystify certain microbiological factors. For example, DNA profiling and gas chromatography-mass spectrometry have been used to catalogue the microbiological population and flavour profiles of cheeses like Stilton. These advanced methods have enabled large-scale producers to better control the final result, reducing the risk of batches being spoiled by undesirable yeasts.
While traditional methods of cheesemaking involved heating milk over a fire, steam has now replaced this process in contemporary practices. Additionally, the use of pasteurisation, introduced in the nineteenth century, has been a significant development in the manufacture of cheese. These modern techniques have contributed to consistently good results in cheesemaking, enhancing the quality and safety of the final product.
Moreover, the type of milk used in cheesemaking can vary, with cow's milk being the most common due to its wide availability and optimal fat and protein content. However, sheep's milk, goat's milk, and even more obscure types of milk, such as buffalo, camel, horse, or yak milk, are also used in cheesemaking, each contributing unique flavours and textures to the final product. These diverse milk sources, combined with modern techniques, have expanded the variety of cheeses available and made the process more accessible and efficient.
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Frequently asked questions
Most blue cheese is gluten-free, but it depends on the brand and manufacturing process. Some blue cheeses are made using mold spores grown on rye or wheat bread, which may cause a reaction in those with gluten intolerance.
Blue cheese gets its distinctive veining from mold. Traditionally, this mold was grown on wheat bread, which contains gluten. However, modern cheese-making techniques have made this method obsolete.
Always read the label and check with the manufacturer. Some companies clearly state on their websites that their blue cheeses are gluten-free.
Pt. Reyes, Roquefort, Gorgonzola, Shropshire Blue, Stilton, Danablu, and Maytag Blue Cheese are some of the major types of blue cheese that can be verified as gluten-free.
Consuming gluten can cause various adverse reactions in those with gluten intolerance or celiac disease, including intestinal damage, migraines, and lactose intolerance.

























