What are some effective ways to identify gutter oil?

What is Gutter Oil?

Gutter oil refers to the inferior oil in life, such as the oil that is fried and fried repeatedly or the best oil after use. The largest amount of gutter oil is the grease trap in the sewer of large urban hotels or other catering hotels. Long-term consumption is very harmful to the body and may cause cancer.

Think of gutter oil in the sewer or cooking oil in the garbage can, which smells bad when you take it out, but just by simply separating it, it becomes a table delicacy.

So how do you tell the difference between gutter oil?

1. Look at the color

Normal cooking oil is clear, and gutter oil is cloudy and dark. This is due to the fact that impurities, waxes, and pigments are mixed in during long-term processing, and they are repeatedly heated and repeatedly inserted into items that are harmful to the body. Unconsciously, the color of the oil is changed.

Second, the feel of oil

Gutter oil will have a sticky feeling during repeated use, so you can feel it by rubbing it back and forth in the palm of your hand. Normal oil will not have a sticky feeling. Moreover, normal tableware is very difficult to clean if there is gutter oil.

3. Smell the smell

Every normal and healthy oil will have its own taste. Take two drops and rub them on your hands, and you will smell a special fragrance when you get closer. On the contrary, if it is gutter oil, it will give off a pungent, disgusting, and unpleasant smell.

Fourth, look at the solidification time

The freezing point of gutter oil is lower than that of normal oil, because many various impurities are mixed in during processing. In the summer, take out the oil after a few hours in the refrigerator. If the oil solidifies, it is not gutter oil, and vice versa.

5. Listen to the sound of burning

Take a drop or two of the oil from the bottom and burn it on a piece of paper. Generally speaking, normal oil does not make a sound, but if it is gutter oil, it will make a sound. The "squeak" burning sound indicates that it contains a lot of water, and if it makes a "crackling" sound, it means that the water content is seriously exceeded, and these oils cannot be purchased.

And finally:When buying oil, you still have to go to some regular supermarkets or stores, and there is a record of buying tickets. There are expiration dates, service periods, manufacturers, after-sales service and other material identification.

Don't be greedy for cheap and go to some three-no stalls to buy oil. You think you have taken advantage, but in fact, it is your physical health that is damaged, and if there is a problem later, it will cost a lot of money to carry out **. Usually, you can cook your own food, so you can cook it yourself or go to a physical store to eat it, which is healthier.

Try not to order takeouts that look particularly cheap and have a lot of meat. Even if you don't fry the oil you usually use at home, it's no different from gutter oil. Illness from the mouth, reasonable purchase of oil.

Take a look. Looking at the transparency, the pure vegetable oil is transparent, and if the alkali lipids, waxes, impurities and other substances are mixed in the production process, the transparency will decrease; Look at the color, the pure oil is colorless, and the oil will be colored because the pigment in the oil is dissolved in the oil during the production process; Looking at the sediment, there are impurities in the gutter oil.

<> smell. Each oil has its own unique smell. You can put a drop or two of oil on the palm of your hand, rub your hands together, and smell it carefully when you are hot. Oil with peculiar smell indicates that there is a problem with the quality; The smelly one is likely to be gutter oil; If there is a smell of mineral oil, you can't buy it.

Three tastes. Take a drop of oil with chopsticks and taste it carefully. Oil with a sour taste is a substandard product, oil with a burnt bitter taste has become rancid, and oil with a peculiar smell may be gutter oil.

Four listens. Take a drop or two of oil from the bottom of the oil layer, apply it to a flammable piece of paper, light it and listen to its sound. Qualified products are those that burn normally and silently; If the combustion is abnormal and makes a "squeak" sound, the moisture exceeds the standard, and it is an unqualified product; The "crackling" sound when burning indicates that the water content of the oil is seriously exceeded, and it may be an adulterated product, which must not be purchased.

Five questions. Ask the merchant's purchase channel, and if necessary, ask for a purchase invoice or check the sampling test report of the local food safety supervision department.

1. Gutter oil generally refers to all kinds of inferior oil in life, such as first-class edible oil, repeatedly used frying oil, etc. The largest amount of gutter oil is the grease trap of the sewer of large hotels in the city. Long-term consumption may cause cancer, which is extremely harmful to the human body.

2. "Gutter oil" is a kind of non-edible oil with very poor quality and unhygienic quality. Once "gutter oil" is consumed, it can destroy people's white blood cells and the mucous membrane of the digestive tract, causing food poisoning and even serious consequences of cancer. Therefore, "gutter oil" is strictly forbidden to be used in the field of edible oil.

How to distinguish gutter oil.

Waste oil identification method:

1. Look at the color, the normal oil is colorless, transparent, and no precipitation, and the color is yellow and precipitated. Smell the smell, take a drop of oil and put it in the palm of your hand, rub your hands together, and the oil that smells when it is heated is gutter oil.

2. Look at the crystals, put the oil in the refrigerated area of the refrigerator for 2 to 4 hours, and the solidification crystals that appear when taken out are gutter oil. Look at the flowability, pour some oil on the glass, if the flow is very slow, it is gutter oil.

3. Look at the results after high fire, the color of the oil changes after high fire, and the color becomes thicker and darker, indicating that it is gutter oil.

"Gutter oil" is a non-edible oil of extremely poor quality and unhygienic. Once "gutter oil" is consumed, it can destroy people's white blood cells and the mucous membrane of the digestive tract, causing food poisoning and even serious consequences of cancer. Therefore, "gutter oil" is strictly forbidden to be used in the field of edible oil.

However, there are also some people who privately produce and process "gutter oil" and sell it as edible oil to some small restaurants at low prices, which brings great harm to people's body and mind. Therefore, the name "gutter oil" has become synonymous with all kinds of low-quality oils that bring physical harm to people's lives.

Why is gutter oil so fragrant?

Gutter oil is made by mixing the oil of leftovers, refining it through rough processing, and adding chemical additives. The smell of gutter oil is due to the fact that criminals add a lot of chemical additives to the oil to enhance the fragrance.

Eating gutter oil can cause food poisoning and even carcinogenic, and its main hazard - aflatoxin is 100 times more toxic than arsenic, so gutter oil cannot be eaten.

Identification method of gutter oil: drop one or two drops of oil on the palm, rub your hands together, smell its smell carefully when it is hot, there is a peculiar smell indicating that there is a problem with the quality, and the smell is likely to be gutter oil.

For the sake of life and health, it is necessary to stay away from gutter oil. But in the face of the possible existence of gutter oil on the market, how should we identify it?

1. Transparency.

The transparency of gutter oil is generally low, because in the process of production, gutter oil is mixed with alkaline lipids, waxes and other impurities, so that its transparency will be greatly reduced, and there may be sediment. So by looking at the transparency of the oil, we can also correctly identify the gutter oil.

2. Color. In terms of color, we can also easily distinguish gutter oil. Because gutter oil needs to be added in the production process, and the pigments of these oils will dissolve into the oil during the addition process, gutter oil will generally have a color presentation.

3. Smell. By smelling the smell, we can also identify gutter oil. We only need to put two drops of oil on the palm of our hand and put it on our nose to smell it, if it is gutter oil, it smells strange and may also smell.

4. Taste. If gutter oil needs to be discerned, it can sometimes be identified by tasting the flavor of the oil. You don't need too much to taste, just dip a little bit with chopsticks and savor the taste, if you taste the smell of the oil, it's probably gutter oil.

5. Sound. Many people don't know that gutter oil can be quickly identified by listening to sounds. To identify, you only need to take two drops of oil, apply it to a piece of paper that burns easily, and light the piece of paper to hear the sound of burning.

If the sound of burning paper is strange, it may be gutter oil.

The above five methods can help you identify the gutter oil well, because the transparent bottom of the gutter oil has a color, so it can be accurately identified after careful observation. In addition, gutter oil can be quickly identified by smelling, tasting, burning and listening to sounds, which are practical and fast.

First: the color of the gutter oil.

Pure vegetable oil does not have any color, and the reason why the oil we see in our lives has color is because it incorporates pigments into its production.

Pure vegetable oil is very pure, it looks very clear, if you see a bottle of vegetable oil in a lot of turbid objects and impurities, you should pay attention, although vegetable oil in the production process will also be mixed with some fat loss, wax and other impurities, but those impurities will definitely not be much.

Second: how does gutter oil taste.

If you can open it when buying cooking oil, you can dip your fingers in a small amount of cooking oil and pinch it gently, pure cooking oil will not have any peculiar smell, if there is a smell or mineral oil in the cooking oil, it means that the barrel of oil is at least not really good cooking oil.

People's sense of smell will be much more sensitive than taste, so when buying edible oil, if you can smell it as much as possible, you can identify the quality of edible oil to a greater extent.

Third: purchase channels.

If the origin of the edible oil is not known, there is no formal trademark, brand and production date, then the edible oil should be extra careful.

How to identify gutter oil? This is something that everyone cares about, I believe that no one wants to eat this kind of oil ingredients that are very harmful to health, so each of us should learn to identify some ways of gutter oil, so that we can enjoy the delicious taste with confidence and stay away from the harm of gutter oil.

The main purpose of looking at the transparency of the edible oil, usually pure vegetable oil is mostly transparent, this edible oil you can buy and eat with confidence. However, if the cooking oil looks cloudy, it means that the oil must be of faulty quality, or it is simply gutter oil. The reason for turbidity is that alkali lipids, waxes, impurities and other impurities are mixed into the production process.

In addition, we should also pay attention to the color of the edible oil, the pure oil is colorless, if the pigment in the oil is dissolved in the oil during the production process, then the oil will have some color. At the same time, it is necessary to pay attention to the sediment, pure vegetable oil will not have sediment.

2.Sniff. By smelling, it can also help us quickly and effectively identify whether it is gutter oil, and it can be said that each edible oil has its own special smell.

When smelling, you can put a drop or two of oil on the palm of your hand, then close your hands together and rub them together until your palm is hot, and then smell it carefully. If the smell is obviously pungent or abnormal, it means that the quality of the oil is wrong. If there is a foul smell, it is likely to be gutter oil, and it is best to avoid buying this oil as much as possible.

Normally, the pure cooking oil aroma is very fragrant, and there will not be any peculiar smell in it, but if there is a foul smell or mineral oil smell, it means that there is a quality problem.

3.Listen. In our daily life, we can also identify whether it is gutter oil by listening, taking one or two drops of oil from the bottom of the oil layer and applying it to flammable paper, and then igniting it with fire.

At this time, you can listen to its sound, if the combustion is normal and there is no sound, it means that it is a qualified product. If the combustion is not normal and the "squeak" sound is also emitted, it means that the moisture in it exceeds the standard and is an unqualified edible oil. If there is a "crackling" sound during combustion, it means that the content in the oil is seriously exceeded.

Most of this edible oil is adulterated products, and it cannot discharge the possibility of gutter oil, so this kind of oil must not be purchased, so as not to affect human health. Excessive intake of gutter oil can not only lead to poisoning, but also have the potential to damage nerves.

At a glance: pure vegetable oil is transparent, colorless, and free of impurities; Gutter oil has low transparency, color, and impurities.

Second smell: Put one or two drops of oil on the palm of your hand, rub your hands together, and smell the smell carefully when you are hot. The smell indicates that the quality is not up to standard, and the smell may be gutter oil.

Three tastes: Take a drop of oil with chopsticks and taste it carefully. The oil with a sour taste is an unqualified product, the oil with a burnt bitter taste has become rancid, and the oil with a peculiar smell may be gutter oil.

Four listening: Take a drop or two of oil from the bottom of the oil layer, apply it to a flammable piece of paper, light it and listen to its sound. Qualified products are those that burn normally and silently; If the "squeak" sound is made, the moisture exceeds the standard; A "crackling"** sound indicates that the moisture content of the oil is seriously exceeded, and it may be adulterated.

Five questions: ask the merchant's purchase channel, and ask for the purchase invoice or check the sampling test report of the local food and drug regulatory department if necessary.

Sixth, the "à la carte" identification method: Generally, the color of the dishes made normally is brighter, while the dishes made of gutter oil are much darker.