Should the steamer be 28 or 30?

If there are not many families, then 28 will be enough. When we buy stainless steel steamer, we should pay attention to whether the material meets the standards of food-grade tableware to prevent harmful substances from damaging our health. When buying stainless steel steamer, you can buy 304 food-grade stainless steel steamer with good corrosion resistance. Usually the steamer surface will be printed with relevant signs. Usually, when we buy stainless steel steamer, we will consider the problem of rust. Generally, stainless steel steamer without magnetism is better, and stainless steel steamer with magnetism is more prone to rust. Let's not ignore the number of layers of the steamer. According to the needs of cooking at ordinary times, you can choose a single one or multiple layers, which is convenient for storage and saves space. If you usually cook a lot, you can also choose multifunctional ones, so that steaming, boiling and stewing can be carried out at the same time, saving time and gas. When we steam things, we use a transparent pot cover, which is more convenient for us to observe the maturity of food at any time and operate flexibly. Many parents have been misled. It is easier to rust with magnetism than without magnetism. This understanding is too general. In fact, the presence or absence of magnetism does not represent the quality of rust prevention, but mainly depends on the material of steel. The nonmagnetic materials are mainly 20 1 and 304. Magnetic main 430 is slightly more rust-proof than nonmagnetic 20 1 stainless steel, followed by yh2 1ct. 304 stainless steel is a kind of American standard nonmagnetic stainless steel, which is austenitic and used for medium and high-grade ships. Second, the bottom of the pot, most non-magnetic steamer has an additional bottom, called double bottom. The double bottom has a magnetic conductive sheet. The non-magnetic pot itself cannot be directly used on the induction cooker, but can be used with double bottoms, which can prevent the pot from deforming. The double bottom can prevent the pan from deforming. A good pot has a three-layer composite bottom and two layers of magnetic sheets. Some pots only have a simple layer of magnetic steel, which looks quite big, and the magnetic conductivity is not good, and it affects the life of the induction cooker. Third, the pot cover, the pot cover has three types: steel cover, glass cover and combination cover. Generally, low-grade magnetic steamers are all glass covers. For example, the low-grade steamers in Supor Astar are mostly glass covers, and the medium-and high-grade steamers are mostly combined covers. The cost of the combined cover is also relatively high.