Stir frying pan should choose iron pot, you can try this selection of iron pots: 1, the pot surface to strive for smooth, but can not require "smooth as a mirror", due to the casting process, iron pots have irregular shallow lines, which is not a problem. 2. Check to see if there is a blemish. Blemishes are mainly small bumps and small pits in two categories, small bumps of the raised part of the general iron, the quality of the pot has little impact. If the bumps are on the concave side of the pan, a grinding wheel can be used to remove them so that they do not block the spatula. Small pits are more complex and more harmful to the quality of the bowl. There are three main types, namely, sand eyes, gas eyes and shrinking eyes. "Three eyes" vulnerable parts in the pot convex and concave two sides of the center, which is pouring iron throat parts. Purchase need to pay attention to see, because some people use graphite to fill the pit, the general public is not easy to detect, can only use a small brush to brush, so that it is exposed. 3. bottom of the pot touching the fire part is commonly known as the pot butt. The big butt of the pot is not good, because it is slow to transmit fire. It takes a lot of time and effort. 4. There are different thicknesses of pots and pans, so thin is good. Some iron pots may be thick on one side and thin on the other, which is caused by the model misalignment, this uneven thickness of the pot is not good. Purchase can be the bottom of the pot to the sky, with a finger against the center of the concave surface of the pot, knocking with a hard object. The louder the sound of the pot, the greater the vibration of the hand, the better. This method can also be used to test the pot with or without cracks. Cracks are generally easy to occur in the pot side, because in addition to the thinnest. 5, such as rust spots on the pot is not necessarily bad quality. The brightness of the pot and the quality does not have much effect. Because the substance that makes the pot bright is graphite. Casting on the use of graphite is to use it as a refractory coating, pot casting, graphite in the objective just so that the role of the pot does not rust. Pots with rust spots indicate that they have been stored for a long time. The longer the pot is stored the better, this is because the internal organization of the pot can be more stable, not easy to crack the first time. 6, cast iron pan (also called pan) because more used to "fry", "branding" do not need to be a big fire, so the bottom of the pot is thicker for the better, the weight can be a little heavier.