How to choose and use edible oil? The 20 questions you want to know most are all here.

Seeing the dazzling array of edible oil in supermarkets, do you often dazzle and don’t know which one to choose?

After buying it home, I heard all kinds of opinions, what [oil should be changed to eat] [vegetable oil can cause cancer] [lard is good for health]… there is really a lot of confusion.

Dr. Clove came to talk about the selection and use of oil.

Can wrong use of oil cause cancer?

1. Is it true that cooking with vegetable oil can cause cancer?

Most vegetable oils are rich in polyunsaturated fatty acids, which are indeed easy to produce a lot of aldehydes at high temperatures, some of which are carcinogenic.

Therefore, we do not recommend using vegetable oil to fry food at high temperature, especially edible oil such as corn oil, sunflower seed oil and soybean oil. If you really want to cook at high temperature, you can choose palm oil and coconut oil.

2. Is the oil smoking when cooking, which is not very good and is easier to cause cancer?

At present, the edible oil we generally use is refined. If smoke is emitted, the oil temperature is already very high. On the one hand, this temperature is more prone to oxidative polymerization, generating some substances with carcinogenic risks; On the other hand, this temperature is also easy to cause the loss of nutrients in food.

Therefore, when cooking, we should pay attention to the temperature control and try not to let the pan emit a lot of lampblack.

Is this oil still edible?

3. Can I still eat the oil in my home after more than 3 years? It doesn’t smell peculiar or precipitate.

It is not recommended to eat it. Oil products may be rancid after long-term storage. The shelf life of common vegetable oil is only half a year.

4. It is said that adding a vitamin E to the oil can prolong the shelf life of the oil?

In theory, it is possible, but generally there is vitamin E in the oil itself, so why… it is more important to keep it sealed and protected from light.

5. Can I still eat hala-flavored oil? There is still a big bucket. It’s a pity to throw it away.

Don’t eat it, it has a hallucinous taste that indicates serious oxidation. Oxidation will destroy unsaturated fatty acids and vitamins in oils and fats, and will also produce substances harmful to human body.

6. Can genetically modified soybean oil be eaten?

Of course it can be eaten. At present, there is no evidence that genetically modified foods on the market are harmful to human health.

I heard that the oil should be changed?

7. It is said that oil should be eaten together. What kind of cooking oil should be prepared at home?

Ideally, it is quite good to use various oils alternately, but in fact, if you buy so many oils to eat together at the same time, according to a person only eat 30 grams a day, the consumption speed will be very slow, 20 yuan of soybean oil can be used for half a year. These oils are likely to have expired and have not been eaten, which is even more unhealthy.

Therefore, I personally do not recommend buying a lot of oil at the same time, or I can buy small packages.

The average family can have one of Zhongshan tea oil, double-low rapeseed oil and olive oil. Palm oil can be prepared if it is really necessary to fry things.

8. How often is it more appropriate to change oil?

In fact, it is also possible not to change oil. You can increase the intake of N-3 unsaturated fatty acids by eating half a kilo to one kilo of fish and shrimp every week.

9. [Meat dishes with vegetarian oil, vegetarian dishes with meat oil], does it make sense?

No reason. For health reasons, vegetable oil is recommended for cooking meat and vegetarian dishes. Meat oil (except fish oil) is rich in saturated fatty acids, which many people consume in excess and should be minimized.

Which oil is the healthiest?

10. Is olive oil really that good and why is it so expensive?

Olive oil is rich in monounsaturated fatty acids. Because it occupies an important position in the traditional Mediterranean diet structure, and the Mediterranean diet pattern has been proved to be a very healthy diet by many studies, olive oil is recommended by many people, and there is relatively more evidence that olive oil is beneficial to health than other oils.

However, in fact, the composition of double-low rapeseed oil is very close to olive oil, and the price is much cheaper and the cost performance is relatively high. Moreover, even in foreign countries, there are many fake olive oil, so there is no need to blindly pursue it.

11. Is the linseed oil in the north good? Is the hot press good?

First of all, you have to make sure that what is linseed oil. In some places, cold pressed linseed oil is called linseed oil, hot pressed linseed oil is called linseed oil, some raw materials may be mixed with some rapeseed, and in some places linseed oil is actually black sesame oil, which is often used as standard for monthly meals…

In fact, neither of them is particularly magical in what, especially hot squeezing is definitely not recommended due to increased oxidation reaction. During the Spring Festival in 2016, the State Food and Drug Administration also notified linseed oil with excessive peroxide value.

12. Which is healthier, peanut oil, soybean oil, rapeseed oil, corn oil or sunflower seed oil?

In contrast, double-low rapeseed oil is not bad.

Corn oil and sunflower seed oil have special flavor, similar to soybean oil, the proportion of n-6 series polyunsaturated fatty acids is too high. However, according to the diet structure of ordinary Chinese, the proportion of n-3 series polyunsaturated fatty acids should be increased.

So these are not the best recommendations.

13. When buying oil, should you pay attention to what?

If you have read all these contents today, then I think you only need to choose big brands and see clearly the types, production dates and raw materials when purchasing.

14. How much oil is appropriate to eat every day?

For cooking oil, it is generally recommended to have 25 ~ 30g of white porcelain spoons full of 2 or 3 spoons per day.

In other words, you have no quota for other fried foods during the day.

15. There is less oil and the cooking is not delicious. What should I do?

Exercise for an hour after the meal, or eat two fewer bites.

Choose the right oil as needed!

16. Which oils are suitable for cold dishes and which oils are suitable for hot dishes? What oil is suitable for fried food?

Soybean oil, linseed oil, wheat germ oil and extra virgin olive oil are more suitable for making cold dishes or salads.

General rapeseed oil and peanut oil can be used for stir-frying.

Palm oil, coconut oil and butter are more suitable for frying.

17. When cooking, is it better to mix several kinds of oils together, or is it better to use different oils for different dishes?

Of course, it is better to use separately according to temperature than to mix.

Personally, it is not recommended to use blend oil, which may be more cost-effective, but after all, the proportion of ingredients is not clear enough. In fact, the general refined olive oil and tea oil are widely used, and the general frying and frying can also be competent.

18. Can I fry chicken wings in olive oil?

Many people stay on olive oil, which is very expensive and can only be mixed with cold. If it is super virgin olive oil, it contains more antioxidant substances and some flavor substances.

It is really only recommended for cold mix or ordinary cooking.

However, if it is refined olive oil, it can be used at a higher cooking temperature, and fried chicken wings are no problem.

19. How to use almond oil and perilla seed oil? Is it okay to stir-fry directly?

Almond oil has a relatively high content of monounsaturated fatty acids, which is similar to olive oil. If it is not cooked at very high temperature, it is possible to stir-fry simply.

Perilla seed oil is somewhat similar to linseed oil, with relatively high linolenic acid content, which is not suitable for high-temperature cooking. It is better to simply mix or stew.

20. I want to lose weight, eating what oil won’t make me fat?

(Serious Face) Soy sauce. Ha ha, but soy sauce is high in sodium, so don’t eat too much.