Speaking of how to judge quality of aluminum cookware, people may have various answers based on their own life experience. Some may say, for example, that you should observe the surface to make sure there are no cracks, spots or other defects. Some people may tell you to feel the weight of a pot. Others may suggest knocking a pot by your fingers and hear the sound it gives off. All the tips above prove to be very useful. However, there is a much easier tip which you may have never heard of.