
Parmesan cheese is traditionally made from cow's milk, however, some Parmesan cheeses contain rennet, an enzyme derived from the inner lining of calves' stomachs. This makes the cheese unsuitable for vegetarians and those who need to consider halal. In recent years, cheese producers have been rethinking the process of cheese-making, with some companies now using microbial rennet, or vegetarian rennet, in their cheeses.
| Characteristics | Values |
|---|---|
| Main ingredient | Cow's milk |
| Rennet | Traditionally made from enzymes from the stomach lining of calves |
| Vegetarian alternative | Yes, some brands use microbial or vegetable rennet |
| Halal | No, traditionally made Parmesan is not halal |
| Vegan alternative | Yes |
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What You'll Learn

Rennet, an enzyme from the stomach lining of calves, is used in Parmesan
Rennet is a natural enzyme found in the stomach lining of mammals that helps them digest their mother's milk. Rennet is traditionally sourced from the stomach lining of calves, and it is used in the production of Parmesan cheese. This means that Parmesan is not a vegetarian product, and it is also not halal, as rennet is a restricted, or haram, ingredient in a Muslim's diet.
However, it is important to note that not all Parmesan cheese contains rennet from animal sources. Some producers use microbial rennet, also known as "vegetarian rennet," which is suitable for vegetarians and those requiring halal products. These vegetarian alternatives are becoming increasingly popular, with some companies now specifying the type of rennet used, even when it is not mandatory.
The inclusion of rennet in Parmesan cheese has recently gained attention on social media, with some people expressing shock and dismay upon learning that the cheese contains animal products. This has sparked a discussion about the traditional methods of cheese production and the availability of vegetarian alternatives.
While the use of rennet in Parmesan may be off-putting to some consumers, it is important to note that it is a traditional method of cheese production that has been used for centuries. However, with changing consumer preferences and ethical considerations, the cheese industry is evolving to include more vegetarian and vegan options.
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Parmesan is not vegetarian-friendly due to the use of rennet
Parmesan cheese is traditionally made from cow's milk, heated and aged for at least 12 months in copper vats. However, its use of rennet, an enzyme traditionally derived from the inner lining of calves' stomachs, renders it non-vegetarian. Rennet is a natural enzyme that helps young mammals digest their mother's milk. While some Parmesan brands use vegetable rennet, many support the dairy industry, which negatively impacts both mother cows and their calves.
The inclusion of rennet in Parmesan cheese has sparked controversy, with some individuals expressing shock and disappointment upon learning this information. This has led to discussions about the suitability of Parmesan for vegetarians and the availability of vegetarian alternatives.
The use of rennet in cheese production is not limited to Parmesan. Other cheeses, such as Gruyère, Gorgonzola, and Grana Padano, also contain animal rennet. However, it is important to note that not all Parmesan cheeses are made with animal rennet. Some brands, particularly in the United States, use vegetable rennet or microbial rennet, also known as "vegetarian rennet."
For vegetarians who wish to avoid animal-derived rennet, it can be challenging to determine whether a particular cheese contains it. Labels often do not specify the type of rennet used, and while some companies are becoming more transparent by indicating "animal rennet" or "microbial rennet," it is not mandatory in many countries.
To ensure they are consuming vegetarian-friendly Parmesan, individuals should look for labels that specify the use of "microbial rennet" or "rennet from non-animal sources." Additionally, vegan alternatives to Parmesan are available, which do not contain any dairy products. These vegan options provide a suitable choice for those who want to avoid animal-derived ingredients entirely.
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Some Parmesan brands use vegetable rennet, making it vegetarian
Parmesan cheese is traditionally made using rennet, an enzyme derived from the inner lining of calves' stomachs. This ingredient has recently come to light, causing concern among vegetarians and omnivores alike. While not all Parmesan cheese contains animal rennet, with many brands in the US opting for vegetable rennet, the traditional and most well-known variety, Parmigiano-Reggiano, does. This variety of Parmesan is protected by a Protected Designation of Origin (PDO) mark, which specifies that calf rennet must be used in its production.
The inclusion of rennet in Parmesan cheese means that it is not suitable for vegetarians. Rennet is derived from the stomach lining of calves, and these calves often spend their short lives in close confinement before being killed for veal. This has led to some cheese producers rethinking their processes, with several methods now producing completely vegetarian and vegan-friendly cheeses.
One such method is the use of microbial rennet, also known as "vegetarian rennet." This type of rennet is used by some cheese producers, such as Cello Cheese, to create vegetarian-friendly Parmesan. This variety of rennet is created by boiling certain plants, such as cardoon thistle, artichokes, or nettles, and straining the result with a cheesecloth. This process leaves behind a thickening enzyme that functions similarly to the traditional rennet derived from calves.
The use of vegetable rennet in Parmesan cheese production is a step towards making this variety of cheese more accessible to vegetarians and those following a halal diet, as traditional rennet is a restricted ingredient in Muslim diets. While some brands are now using vegetable rennet, it is important to note that not all Parmesan cheese is vegetarian-friendly, and consumers should check the labels carefully before purchasing.
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Parmesan is traditionally made from cow's milk
Parmesan cheese is traditionally made from cow's milk. It is aged for at least 12 months in copper vats, where it is heated. The biggest difference between Parmesan and other cheeses is the amount of aging. Parmesan is made from cow's milk, while other cheeses like Pecorino are made from sheep's milk.
Some Parmesan cheeses contain rennet, an enzyme traditionally derived from the inner lining of calves' stomachs. Rennet is a natural enzyme found in the stomachs of young mammals that aids in the digestion of their mother's milk. This means that traditionally made Parmesan is not halal or vegetarian. However, some cheese producers are rethinking the process of cheese-making to make it more inclusive for vegetarians and those who require halal food. For example, Cello Cheese uses microbial rennet, also known as "vegetarian rennet," in all of their cheeses.
In addition, there are vegan alternatives to Parmesan that do not contain any dairy products. These vegan options are suitable for those who are vegetarian or require halal food.
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Vegan alternatives to Parmesan are available
Parmesan cheese is traditionally made using rennet, an enzyme sourced from the inner lining of calves' stomachs. As such, it is not vegetarian-friendly, and this has come as a shock to many consumers. However, there is no need to despair, as vegan alternatives to Parmesan are available.
Vegan Parmesan is typically made using four ingredients: cashews, nutritional yeast, lemon zest, and sea salt. The cashews provide richness and texture, and it is best to use raw cashews to avoid a strong cashew taste in the final product. Nutritional yeast is the key ingredient that adds the desired cheesy flavor, while lemon zest brightens the other rich, savory flavors. Finally, sea salt is added to taste, and it is important to note that the recipe calls for unsalted cashews. All the ingredients are added to a food processor and pulsed until they form a coarse meal with a soft, crumbly texture. It is important not to overprocess the mixture, as it may turn into cashew butter. This vegan Parmesan can be stored in the refrigerator for up to five days or frozen for later use.
There are also commercial vegan Parmesan options available, such as those offered by Violife and Follow Your Heart. Additionally, some creative home cooks have suggested alternatives like pangrattato, a crunchy topping made by frying breadcrumbs in oil with garlic, thyme, and salt.
With these vegan alternatives, conscientious cheese lovers can enjoy the flavor and texture of Parmesan without the use of animal-derived rennet.
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Frequently asked questions
Parmesan cheese is traditionally made using rennet, an enzyme derived from the inner lining of calves' stomachs. However, some Parmesan brands use microbial or vegetable rennet, making them suitable for vegetarians.
Parmesan cheese is traditionally made using rennet, which is derived from the stomach lining of calves, making it unsuitable for vegetarians.
Yes, there are several vegetarian alternatives to Parmesan cheese. Some brands use microbial or vegetable rennet, and there are also vegan options that do not contain any dairy products.

























