a. Defect: secondly, there may be some defect points in the pot, mainly the small raised points and pits.Generally speaking, the raised part is iron, but the quality of the pot will not be affected by this.If the concave surface of the pot is raised, it is necessary to use grinding wheel to grind off, in order to avoid blocking the dish when cooking.For pit treatment, some manufacturers will fill the pit with graphite, which will not be easy to find.So, when shopping for a pot, you can use a small brush to brush its surface to verify.
b.Thick and thin bottom of the pot: where the bottom of the pot touches the fire, it is commonly known as the bottom of the pot.Its thickness had better not be too thick, so in the transmission of fire is relatively slow, not only burning, but also more time.Of course, the whole pot also has thickness, relatively speaking, thinner better.If the thickness of the iron pot is not consistent, and one side is thick while the other is thin, it can be caused by the malposition of the model, it is better not to choose such.You can teach you a technique of choosing a pot, turning the bottom upside down, then holding your finger against the center of the concave surface and tapping with an object.The louder the sound, the more vibratory the hands feel, the better the pot.
c.Pot rust: we will find rust spots on the pot, which cannot mean that its quality is not good.In fact, this is because when casting the pot, will use graphite as its refractory coating, so that the pot can play a role of rust.Rust stain indicates that it will be stored for a longer time, the internal tissue will be more stable, and it is not easy to exercise during use.Such a frying pan would be better by comparison.
d.pan: there is a pot, is the common pan (also known as dang), it is mainly used for "frying" "flipping" use it, don't need too big, can choose thicker a pot.