1, the oven must be preheated when used. Preheating is to make the food reach the required temperature before putting it in the oven. If you put the food directly into the oven without preheating, the heating pipe will be fully heated at this time, and the food will face problems such as uneven heating, water loss, and easy burning of the surface, which will affect the quality.

2. Preheating method: For example, when baking cookies, the recipe requires the temperature to be 190 degrees. Before putting the biscuits into the oven, turn on the power supply of the oven, adjust it to 190 degrees, let the oven burn for a while, and then put the biscuits into the oven for baking when the inside of the oven reaches 190 degrees.

Preheating time: domestic ovens generally have no preheating indicator light. So pay attention to the heating pipe. When the heating tube turns from red to black, it means that preheating is completed. The preheating time is different according to the temperature and size of the oven. Theoretically, the greater the power, the faster the oven warms up. Generally, preheating takes 5- 10 minutes. The preheating time should not be too long. If the oven burns empty for too long, it will not only waste energy, but also shorten the life of the oven.

3. At present, it is basically impossible to adjust the temperature of the upper and lower tubes independently in domestic household ovens. When we come across a formula that requires different temperatures of the upper and lower tubes, such as "middle layer of oven, upper tube 180 degrees, lower tube 200 degrees", we can take the average value, that is, the upper and lower tubes are heated to 190 degrees, and the baking tray is placed on the next layer.

4. The temperature of domestic ovens is generally inaccurate and unstable. So when baking according to the recipe, the temperature of the recipe may not be suitable for your oven. At this time, flexible adjustment is needed. If you bake cookies at 200 degrees 15 minutes according to the recipe, you should understand that you should lower the temperature or shorten the time next time.

5. The oven is heated by a heating pipe. Therefore, there is a great temperature difference between the inside of the oven, near the heating tube and the center of the oven. If the internal volume of the oven is relatively small, the food is prone to uneven heating when baking-the food near the inner side may burn quickly, while the food near the outer side has not been colored, will it make you feel depressed?