How To Tell If Meat Is Spoiled
Food-transmitted diseases such as E-coli or salmonella are responsible for millions of cases of food poisoning every year. The majority of these cases are the result of eating meat that has gone bad. It's fundamental to store meat correctly, as the possibility of getting ill due to food-transmitted diseases increases substantially the older the meat becomes.
Knowing how to tell if meat is spoiled can help you prevent experiencing the awful effects of food poisoning. At oneHOWTO and we'll share our best tips. We do this by looking at different types of meat and dispelling some myths about what is and is not edible.
Before buying any kind of meat, check the sell by or expiry date on the package. If the meat has passed its expiry date, do not buy it. It doesn't matter how low the price may be. If the package doesn't have an expiry date, batch and date of packaging, don't buy it for safety reasons. The best you can do is to choose completely fresh meat instead.
Some may tell you that sell by dates are just a guideline. It is true that some meat will still be edible if it has gone past its sell by date. However, the risk of getting food poisoning is not worth the gamble. This is particularly so if the meat has been opened before this date. It is always best to err on the side of caution when wondering if meat has gone bad.
Is meat bad if it has changed color?
One of the important factors in telling if meat is bad is to know what type of meat we are talking about. We are talking about all types of meat, such as beef, pork, lamb, venison, duck, chicken and turkey. Some may claim the latter three are poultry and not meat, but here they are all included in the same category. As these different types of meat have different properties, they will also be different colors. Even different parts of the same animal will have different colors.
A study from 2016 shows the importance of looking at meat to tell if it has gone bad. They showed that we need our visual stimuli to make a quick assessment over whether food has gone bad. However, since we no longer have as close a relationship to food as we once had (due to the commercialization of food in general), we may not maintain as keen a discernment when it comes to looking at food alone.
Here are some of the different types of meat and their appearance to help you know what fresh meat can look like:
- Chicken: raw chicken can be a range of colors. Sometimes it can be a pale white with even a bluish tone, other times it can be slightly yellow. This will depend on different factors such as the breed of chicken, method of farming and feed. Corn fed chickens tend to take on the aforementioned yellow color.
- Beef: this will depend on the cut, but mostly beef will be some shade of red. A prime cut such as a fillet will likely be redder than other cuts and the white fatty marbling will have an effect also. Veal is young beef and it is noted for its paler pink color.
- Pork: some pork is a similar color to veal, such as the loin. Bacon is a pork product and this one is also a pink color.
- Venison: similar to beef, venison should be a brownish dark red color. This is usually even darker than beef, although it will depend on the cut.
- Duck: although poultry, raw duck breast is actually another type of red meat. It will be similar color as beef, but will have a skin on it which is similar color to chicken skin.
- Lamb: lamb is also considered a red meat and should be a deep cherry red color, similar to beef.
However, just because meat has changed color slightly, doesn't mean it has gone off. Beef which has been opened to the air becomes exposed to oxygen. When beef meat oxidizes, it will turn slightly brown or gray. This doesn't mean it has become spoiled. It is only when bacteria are allowed to activate that the meat will be considered bad. As chicken can come in various types, it can be difficult to tell from color alone. This is why we nee more conclusive ways to tell if meat is bad.
Smell of raw meat
Smell the meat. This is probably the easiest way to know if meat is spoiled or still good. Whatever the type of meat, if it smells off and horrible, it's not good to eat. The smell of spoiled meat is putrid, sharp and unmistakable.
You can find minced meat in the shops that may look fresh, but has a slight smell. This could mean that the meat has started to go bad or carbon monoxide has been used during its packaging to maintain its red color even after it's gone bad. In any case, you shouldn't take the risk.
Free-range poultry meat has a more distinctive smell when it goes bad - a putrid smell that should stop you from eating it, even if you have a stomach made of steel. This smell is due to the gases produced as bacteria deteriorate the meat.
The texture of the meat can tell if it is spoiled
Take your time to take a closer look at the meat. Meat gone bad can usually have a slimy texture, which is a sign that bacteria have started to multiply on its surface. When meat is spoiled, especially if it's poultry, it can also be sticky. If you see any kind of strange element on the meat or if it has black or green areas, it means fungus has started to grow.
Again, there is a difference between certain meat changing color and changing texture. Meat which has been refrigerated will be firmer, becoming a little softer when it reaches room temperature. Offal (intestines, liver, kidneys, etc.) will naturally be a little slimy, but this doesn't mean it has gone bad.
Does it matter how the meat is processed?
If you have food which has been processed or cooked, then this will have a bearing on its texture and odor. Cooked meat will last longer, but it can still go off. However, the texture may stay relatively the same and the type of dish it is served in will affect it. For example, if you have cooked beef in a tomato sauce, then the color will take on the hue of the tomatoes. This is why it is best to work out when the meat expires. If we rely on smell alone to tell if cooked food is bad, we can get confused by the smell of other ingredients.
Some people might want to know how to tell if dried meat is spoiled. Meat drying is a process of preservation, meaning meat can last much longer before it does bad. To tell if dried meat has gone bad, you should handle it and smell it. If any moisture has entered the meat, it will likely turn rotten. Smell is a good indicator with dried meat. If it smells in any way off, then it is not worth the risk. Remember much dried meat might be spiced, so ensure you can tell the difference between this and meat that has gone off.
Minced meat, if it is still raw, will behave similarly to cuts of meat. Give it a smell and look at the texture. Minced beef might still be a little pink in the middle when cooked, even if it is well done. It can turn a little brown when oxidized, but this doesn't mean it is gone bad. You should remember that you should cover meat again once you open it, otherwise it can go off more quickly.
How to store meat to keep it fresh
To prevent meat going bad and losing its original nutritional properties, it will be necessary to take security measures so the meat maintains its properties and is stored in a perfect state.
If you've checked the meat is in good state and that you can eat it without risks, you can make incredible meatballs, cook the meat or have a barbecue with friends.
However, if you are presented with cooked meat and want to know if it's spoiled you should look for slimy chunks of meat too: this is your best indicator that the meat you are eating is bad. Cut the meat to take a look at the inside to check for funny spots as you would with uncooked meat.
Now that you know how to detect it, take a look at what happens if you eat meat that has gone bad.
Are there any other ways to tell if meat is spoiled?
Finally, a recent study has proposed a more automated way of telling if meat has gone bad. This feeds in all of the information about spoiled meat to a program which can further the “classification accuracy and speed of operation by selecting more appropriate features in the preprocessing step”. It does this by creating an electronic ‘nose’ which is able to detect the smells of rotten meat to a minute degree. Perhaps we have lost certain innate skills by losing touch with how we interact with our food. However, this doesn't mean we can't still find a solution.
If you want to know if other types of food are spoiled, at oneHOWTO we have plenty of articles that will help you:
If you want to read similar articles to How To Tell If Meat Is Spoiled, we recommend you visit our Food & drink category.
- Leaving the meat in a freezer for too long will not spoil the product, but will alter its color and will get rid of the meat's nutrients. Cooking frozen meat can usually give it a sour and dry taste.
- Undercooked meat can cause the same dangers in human beings as meat gone bad, no matter how fresh it may be. Cook your meat well to reduce probabilities of getting food poisoning to a minimum.
- Don't trust the expiry date in the shop where you've bought the meat as an indicator of how fresh it is, as dates are easy to change. Use your senses (including common sense) to decide if meat is fresh or it's gone bad.