1, roast corn at 220 degrees for about 20 minutes. The time required to heat food in the oven depends on the size of the food and the hot and cold procedures of the food. Different ovens have different performances, so you need to master your own oven habits to decide.

2. Roast chicken and roast duck: set the temperature at 400 degrees, preheat the oven for 15 minutes, then add the chicken and duck and bake for about 1 hour (depending on the food weight).

3. Bake the cake: Adjust the temperature to 350 degrees. Preheat the oven for 15 minutes, then put the cake in and bake it for 15~20 minutes.