Tips for choosing casserole

Clay pots have a unique flavor for stewing food, and casserole pots can be used to decoct medicine without changing its original flavor. Therefore, casseroles are a daily consumer product that is loved by consumers. However, the porcelain glaze of casseroles contains a small amount of lead, which is easily dissolved when cooking acidic foods and is harmful to health. Therefore, it is best to choose casseroles with natural inner walls. Clay pots with colored inner walls are not suitable for storing wine, vinegar, acidic beverages and food. Newly purchased casseroles can be soaked and boiled in 4% vinegar water first, which can remove most of the harmful substances.
1. Look at the pottery. The pottery used in good casseroles is very fine and mostly white in color. The quality of the surface glaze is also very high, bright and uniform, and has good thermal conductivity.
2. Look at the structure. A good casserole has a reasonable structure, is placed flat, has a round pot body, a smooth inner wall, no cracks or cracks, and no protruding sand particles. The lid of the pot is tightly buckled and does not deform. You can cover the lid and try to turn it. If the lid is tightly attached to the pot body, there should be a smooth friction feeling when turning it.
① Look at the surface of the pot. The surface of the pot is smooth, but it is not required to be as smooth as a mirror. It is normal to have irregular shallow lines on the surface, but if the lines are too dense, it is a defective product.
② Observe the points. "Small bumps" can be ground off with a grinding wheel. "Small pits" are of poor quality. Some pot sellers often use graphite to fill the "eyes", which are not easy to find. Only a few brushes with a small brush can expose them.
③ Check the bottom of the pot. The smaller the bottom of the pot, the faster the fire will be transmitted, saving fuel and time.
④ Check the thickness. Pots are divided into thin and thick, and thin ones are better.
3. Listen to the sound-tap the pot body with a pot lid or a coin. The clear, bright and crisp ones are better. When identifying, you can turn the bottom of the pot upside down, hold the center of the concave surface with your fingers, and knock with a hard object. The louder the pot sound, the greater the vibration of the finger, the better.
4. When purchasing, fill the casserole with enough water and check if there is any leakage. You can also tap the pot body gently with your hand to see if the sound is crisp and there is a lingering sound. If there is a hoarse sound, it means that the casserole has cracks, so it is best not to buy it.
5. Buy casseroles according to needs. Generally speaking, decocting medicine does not require a casserole with good ceramic quality, so you can just buy a cheap and leak-free casserole. The requirements for pots for stewing food are higher, so it is best to choose a high-quality white casserole.