
Feta cheese is a popular ingredient in many dishes, but it can be tricky to store and prone to spoilage. If you've eaten feta cheese that has gone bad, you might be worried about potential health risks. While eating spoiled feta cheese is not advisable and can cause unpleasant symptoms, it is unlikely to lead to serious health issues. The severity of any negative reaction depends on various factors, including the type of contamination and the amount consumed. In most cases, consuming small amounts of spoiled feta cheese may result in mild gastrointestinal discomfort, but it is unlikely to require medical intervention. However, it is always advisable to consult a healthcare professional if you have concerns or experience severe symptoms.
| Characteristics | Values |
|---|---|
| Shelf life | Up to six months |
| Storage | Should be stored in brine |
| Texture | Becomes rubbery and tough when it goes bad |
| Taste | Becomes overly sour or bitter when it goes bad |
| Mold | Should be discarded if mold is present |
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What You'll Learn

Feta cheese has a shelf life of a few months to a year
Feta cheese is a popular ingredient for sprinkling on salads, baked potatoes, and pizzas. It has a salty and slightly sour flavor. When stored correctly, feta cheese can last for several months to a year. Unopened feta cheese packed in liquid salt brine can last for up to six months if stored correctly in the refrigerator. It is important to ensure that the block of cheese is completely submerged in the brine and that the container is clean and dry to avoid contamination.
Once opened, feta cheese should be consumed within one to two weeks. Storing feta cheese in olive oil after opening can extend its shelf life by up to two to three weeks. The olive oil creates a barrier around the cheese, protecting it from outside contaminants such as bacteria, yeast, and other microbes. However, olive oil will alter the taste of the feta cheese, making it more pungent and robust.
If you are using crumbled feta cheese, it can be stored in its original container without any trouble. Some people choose to store crumbled feta cheese in the freezer to extend its shelf life, although this may affect the texture and taste of the cheese. It is important to note that freezing and thawing feta cheese can make it overly crumbly.
It is important to check feta cheese for signs of spoilage before consumption. If the cheese has developed a yeasty or sour smell, bitter taste, or noticeable mold growth, it has gone bad and should not be consumed. Proper storage and periodic checking are key to ensuring the freshness and safety of feta cheese.
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Opened feta should be eaten within a week or two
Feta is a moist, aged cheese with a shelf life of a few months to a year. Opened feta should be eaten within a week or two. If you expect to use the cheese within a few days of opening it, you can wrap it with plastic wrap, or put it into a freezer bag or an airtight container. If you want to keep it longer, you should store it in brine.
Feta in brine should be treated the same as fresh mozzarella. If you're working with crumbles, they can stay in their original container. As long as a block of feta is unopened, it's fine in its original packaging. But once you cut open the block and have leftovers, you need to decide how to store it.
If you don't store opened feta properly, it could go bad before you get to enjoy it. If you notice your feta has a funny taste, like overly sour or suddenly bitter notes, this means something's not right. Noticeable signs of mold growth, such as dark or green discoloration on the cheese, are also clues that something is amiss. A slightly acidic odor is normal for feta, but if it becomes much stronger, the cheese is no good. If your feta block is slimy or starts to crumble on its own, it’s past its prime.
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Feta cheese can be stored in brine for up to a month
Feta cheese is a delicious addition to many dishes, but it can be tricky to store. The good news is that feta cheese can be stored in brine for up to a month, and there are a few different ways to do this.
Firstly, it's important to understand why brine is effective in preserving feta cheese. Brine is a solution of water and salt, and it is often used to preserve and flavour foods like pickles and sauerkraut. When feta cheese is exposed to air, it starts to dry out and the flavour becomes sharp and sour. By storing feta in brine, you can prevent this from happening, and the cheese will retain its crumbly texture and salty taste.
If your feta cheese comes packaged in brine, simply seal the container and store it in the refrigerator for up to 3-4 weeks. You can also store a whole or half block of feta in the brine, but it may be easier to cut the cheese into cubes first so that you can take out only what you need.
If your feta cheese doesn't come packaged in brine, or if you've discarded the brine, you can make your own. Combine 2 cups of water with 2 teaspoons of kosher salt or sea salt, stirring until the salt dissolves. You can also use a higher ratio of salt to water, such as 1 pound of salt per gallon of water, for a stronger brine that will add more saltiness to your feta. Place your feta cheese in an airtight container and cover it completely with the brine. Seal the container and store it in the refrigerator for up to 3-4 weeks.
It's important to note that feta cheese should not be frozen, as it does not freeze well. Additionally, if you're looking for a low-sodium option, you can try marinating the feta cubes in olive oil instead of brine. With proper storage, you can enjoy your feta cheese for up to a month without worrying about it going bad.
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Signs of bad feta include a bitter taste, dark spots, and mould
Feta cheese is a popular addition to many dishes, but it's important to be aware of the signs of spoilage to ensure safety and quality. Feta is a moist cheese, and mould can easily permeate it. So, what are the signs of bad feta?
Firstly, discolouration is a clear indicator that feta cheese has gone bad. Dark spots or areas on the surface of the cheese indicate that it is no longer safe to eat. If you notice any noticeable signs of mould growth, such as dark or green discolouration, it's best to discard the cheese.
Secondly, changes in taste can also indicate spoilage. Feta cheese typically has a salty and slightly sour flavour. If your feta has developed a bitter taste or has become overly sour, this is a sign that something is not right.
In addition to discolouration and changes in taste, you may also notice changes in texture. If your feta has become slimy or starts to crumble on its own, it's past its prime. Proper storage can help extend the shelf life of feta cheese. Storing feta in brine, for example, can help inhibit bacterial growth and preserve the cheese's moisture and flavour. However, even with proper storage, it's important to regularly check your feta cheese for any signs of spoilage.
If you accidentally consume feta cheese that has gone bad, it's important to monitor yourself for any potential side effects, such as an upset stomach or food poisoning symptoms. However, it's important to note that the potential risks and consequences of consuming spoiled feta cheese may vary depending on individual factors and the extent of spoilage.
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Feta cheese that is bad will have a slimy texture and crumble easily
Feta cheese is a tangy, salty, and slightly sour cheese that is often crumbled over salads, baked potatoes, and pizzas. It has a distinct aroma and a firm, crumbly texture. However, when feta cheese goes bad, its texture changes significantly. One of the key indicators of spoiled feta cheese is a slimy texture. If your feta has become slimy, it's a sign that something has gone amiss, and it's best to discard it.
Feta cheese that is bad will exhibit a noticeable change in texture. Good feta cheese should have a firm, crumbly texture, but when it goes bad, it becomes slimy and may also crumble more easily than fresh feta. This change in texture is due to the breakdown of the cheese's proteins and fats as it spoils. The slime on the feta cheese is an indication of excessive bacterial growth, which can be harmful if consumed. Therefore, it is essential to prioritize your safety and refrain from consuming feta cheese with a slimy texture.
In addition to the slime, bad feta cheese may also exhibit other noticeable changes. Discoloration is a common sign of spoilage, with the cheese turning from its original creamy white color to a yellowish or greenish hue. This discoloration is caused by chemical changes in the cheese as it deteriorates. Moreover, mold growth is another indicator that your feta cheese has gone bad. While some cheeses are meant to have mold, feta is not one of them. Any blue, green, or black mold growth on the surface of the cheese indicates spoilage and can be harmful to your health.
The smell of feta cheese can also provide clues about its freshness. Fresh feta has a mild, tangy aroma, while spoiled feta may develop an off smell that is sour or rancid. This change in odor is due to the growth of bacteria and the breakdown of the cheese's components. If your feta smells sour or rancid, it is best to discard it. It is crucial to trust your senses and prioritize your safety by refraining from consuming feta cheese that exhibits any of these signs of spoilage.
To prevent feta cheese from going bad, proper storage is essential. Feta cheese should be stored in the refrigerator at a consistent temperature to prolong its shelf life. Properly sealed packaging also helps maintain freshness. Unopened feta in brine can last longer than feta stored without brine, as the brine retards surface mold and keeps the cheese from drying out. Additionally, minimizing air exposure reduces the risk of mold growth and spoilage. By following these storage guidelines, you can help ensure that your feta cheese stays fresh and safe to consume.
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Frequently asked questions
If you suspect that the feta cheese you consumed has gone bad, look out for any unusual tastes or textures. Feta cheese that has gone bad will often taste overly sour or bitter. It may also have a slimy texture or appear to be discoloured. If you notice any of these signs, it is best to discard the cheese and seek medical advice if you feel unwell.
Feta cheese has a shelf life of a few months to a year. Once opened, it is recommended to consume it within a week or two. If stored in brine, feta cheese can last up to a month.
There are several signs to look out for to determine if feta cheese has gone bad. This includes noticeable mould growth, dark or green discolouration, a strong acidic odour, or changes in texture such as sliminess or crumbleness. If you are unsure, it is best to err on the side of caution and discard the cheese.

























