1, excessive protein whipping, protein only need to whip to neutral, excessive and insufficient will seriously affect the effect of the cake;

2, the top of the oven temperature is too high, this small oven is particularly serious, because the closer the heating pipe closer to the higher the temperature, it is recommended to buy a food thermometer and reduce the amount of machine eggs, the ability to can be recommended to buy a large oven, 35L can be enough for family use;

3, too little moisture, it is recommended to strictly follow the recipe to measure the amount of water affects the taste of dry, dry, cracked. Family use;

3, too little water, it is recommended to measure the amount of water in strict accordance with the recipe, the amount of water affects the taste, less water is dry, dry is cracked.

Solution:

1. put in the lower middle layer, upper and lower heat 145 degrees, baked for about 15 minutes (this time the top of the cake rose to the same height as the mold)

2. still lower middle layer, turn off the lower fire, the upper fire turned to 170 degrees, baked for about 4 minutes to let the surface of the color crust

3. put in the lower layer, upper and lower heat 175 degrees, baked for 35 minutes (if halfway through the skin color is too dark, you can cover with a layer of tinfoil)