People who have used the iron pot know that the iron pot has a big disadvantage, that is, it is easy to rust, and the iron pot may become rusty after only one week's purchase. Is it harmful to human body to use the rusty iron pot to fry vegetables? How to prevent the iron pot from rusting?
Advantages of stir fried vegetables in iron pot
Many years ago, the determination showed that the iron content of scrambled eggs could be increased by twice when the iron pan was used. In other words, cooking in an iron pot can indeed increase the content of iron in the dishes in an objective sense.
Although cooking in an iron pot can increase the iron content of dishes, these iron are inorganic iron, and the human body needs to absorb iron in the form of organic compounds, also known as heme iron. The absorption rate of heme iron in the human body is about 30% - 35%. However, the absorption rate of non heme iron from iron pot is not high, which is estimated to be less than 3%. Although frying in iron pot can not increase the absorption of iron element, it is also beneficial to use it:
1. Stir fry vegetables in iron pot with less oil
Iron pot used for a long time, the surface will naturally generate a layer of oily light, basically equivalent to the effect of non stick pot. You don't have to put too much oil in your cooking to avoid eating too much oil. Clean the iron pot without detergent. Clean it with hot water and hard brush, and dry it completely.
2. Traditional iron pot can avoid the potential influence of harmful chemicals on the surface of non stick pot
The surface coating of non stick pot usually contains carbon tetrafluoride, which may damage the liver, affect the growth and development, and even cause cancer. Studies have also shown that this chemical may lead to early menopause in women.
When cooking in a nonstick pan, carbon tetrachloride will turn into gas and volatilize at high temperature, and the cooking fume will be inhaled by the human body. In addition, the surface of the non stick pot is scratched by a shovel, and the carbon tetrachloride will fall into the food and be eaten directly into the stomach. The traditional iron pot does not have this chemical coating, and there is no such danger naturally.
3. Stir fry with iron pot can supplement iron element
Under high temperature, a small amount of iron in the iron pot will penetrate into the food, so it plays an objective role in iron supplement.
Is iron pot rusty harmful to people?
It is mainly damage to human liver. When it comes to iron pot, people love and hate it. As the most commonly used traditional cooking utensils, iron pot is self-evident for human health. A small amount of iron dissolved in traditional wok is easy to be absorbed by human body, which can effectively prevent iron deficiency anemia and is very beneficial to human health.
Moreover, the iron pot has become the World Health Organization's recommended healthy cooker. However, the iron rust disease that can not be eradicated makes people worry a lot more when using the iron pot.
Rust in an iron pot is the iron oxide produced by the chemical reaction between the iron atom in the iron pot and the oxygen atom in the air. Experiments have shown that the incidence rate of liver disease in urban residents is higher than that in rural areas. The main reason is that excessive iron oxide is absorbed. The most direct and harmful factor is the damage of iron oxide to human liver. Therefore, the harm of rust to human body has always been one of the health topics concerned by experts and scholars.
How to get rid of rust in the iron pot?
As for how to remove rust, I'll give you some tips here--
Grinding: find a worn-out grinding wheel, or steel ball, sandpaper, and grind off the convex and rust of the pot.
Soaking: soak the pan in thick rice washing water for 2-3 hours, then boil and rinse the water. Rice washing water has a strong decontamination effect.
Oil application: after each use of the iron pot, it must be cleaned and placed in a ventilated place for drying. In addition, you can put a little lard on the bottom of the pot to isolate the air and water.
Vinegar method: vinegar can remove rust. Very effective. Heat the pot first, turn off the fire. Wipe the rust part directly with a rag and vinegar. Ordinary rust will fall off immediately
How to prevent iron pot from rusting?
1. Establish a protective film before using the new pot
Many people know that the new pot needs to be heated with a little more oil before use, and shake the pot to ensure that the surface of the pot is stained with oil. Leave for half a day to a day before cooking. The purpose of this is to form a protective film on the surface of the pot, to isolate the iron of the pot from the air, and to prevent the formation of rust.
Tip: the protective film just insulates the air to a certain extent. However, due to the frequent use of the pot in the later stage, the protective film will often be damaged. So this is only the first step to prevent the pot from rusting.
2. The pot should be cleaned in time after use
After using the pot, wash it in time and wipe off the food residue with a rag. Some of the burnt starch residues stick to the pot, which is difficult to clean. At this time, it is easy to use the water bubble for more than ten or twenty minutes and then scrub it. The purpose of doing this is to keep the hygiene first, and second, the food residue is not cleaned up, and it is easy to react with the iron pot to form rust.
Tip: many people like to wash pots with steel balls. This is very unscientific. The steel wire ball is very sharp. Although it can clean the food residue thoroughly, it also destroys the protective film of the pot, so the cleaned pot is easy to rust.
3. Always dry / dry the pan after cleaning
After the pot is washed, we should dry the water stains on the surface of the pot with a dry cloth or heat to dry, to ensure that the surface of the pot is dry. If there is water on the surface of the pot, even a little bit, after half a day's observation, there will be small pieces of rust. It is very important to ensure that the surface of the pot is dry.
Tip: some friends like to paint some oil on the pan after washing, which I don't think is necessary. On the one hand, it's a waste. On the other hand, cockroaches like oil residue very much. In order to reduce cockroaches, don't oil it.
4. Hang or buckle the iron pot upside down
After the pot is washed and dried, it should be hung up or buckled upside down on the hearth, so that even if there is moisture, it will not stay on the surface of the pot. If you put it on the stove, if you wet the pot with moisture, or if you wet the pot with water in the kitchen, the water will stay at the bottom of the pot, and there will be rust in a few hours.
5. Keep the kitchen ventilated
The last step is to keep the ventilation, open the kitchen window, or make sure there are vents. In this way, air convection will be maintained, and water vapor will not stay in the pot, which is not conducive to the formation of pot embroidery.
Xiaobian thinks that in addition to knowing how to remove rust, he also needs to pay more attention to the maintenance of the iron pot at ordinary times, such as using less detergent and not too hard when brushing, so as to prevent the iron pot from being damaged. The iron pot should be cleaned in time and dried immediately to prevent rusting.