In general, a baking tray is included when purchasing an oven. However, according to my personal experience, the quality of the baking tray that comes with the oven is not very safe. The baking tray that I got when I bought the oven is very poor in water repellency, not easy to demould, and the material is still aluminum, which is very unsafe.
Therefore, it is recommended to prepare a baking tray for yourself. After all, it is a tool for direct contact with food at high temperatures, so for the health of the family, you should choose carefully. At the same time, it is also convenient to make a plate when the biscuits are not put down, and the second plate can be prepared when the first plate is baked. So, at least two!
The four corners of the square baking pan have a large curvature due to their large curvature, and there is a maximum value of their thermal distribution gradient, which is faster. The round baking tray has a continuous rotational symmetry, which means that no matter how many degrees you turn, it can return to itself. This determines that his heat distribution must also be uniform in angle, so in the case of a constant total energy, there is no phenomenon that all individual points of the square disk are particularly heated.
I personally agree that square baking pans are easy to bake four corners and edges while round baking pans are more evenly heated and not easy to bake the edges, because this is personal insight.
The main points I consider when choosing a baking tray are: whether the material is safe, whether the heat is even, how the heat transfer is, how easy it is to demould, and how to clean.
At present, the main baking trays on the market are: silicone baking trays, glass baking trays, ceramic baking trays, aluminum baking sheets and carbon steel baking trays.
The appearance of the color wins, plus the non-stick is not sticky, easy to clean, has become the more popular baking sheet material.
The biggest drawback of silicone material is safety. Even if silicone is used for food, it will decompose silicone oil at high temperatures, and silicone oil may contain phthalate, which is a harmful substance to the human body.
Good look and easy to clean.
High-temperature resistance, and the risk of lead production in ordinary glass baking trays.
The same high value as the glass baking tray is the biggest feature, high heat resistance, up to 800 °C.
Ceramics produce harmful substances at high temperatures and are relatively heavy.
It is more popular with the public, and has good thermal conductivity and corrosion resistance. It can be integrated and easy to clean.
There are also concerns that aluminum alloys will precipitate aluminum ions at high temperatures, and excessive intake of aluminum may cause Alzheimer's disease. But don't worry, you can choose to use the aluminum alloy baking pan treated by the anodizing process. The metal surface is relatively stable and safe.
Carbon steel baking trays are safer than aluminum baking trays. Corrosion resistance, easy cleaning and other aspects of performance are comparable to aluminum alloy.
The thermal conductivity is slightly less than that of the aluminum alloy baking sheet.