1. When baking, bake directly with high fire, without preheating with low fire first. Before baking any food in the oven, preheat the oven first, so that the baked food will be more delicious. Generally, it is recommended to preheat the oven for 5- 10 minutes, and the minimum preheating temperature is 160℃.

2. The baking temperature used is too high. When roasting small pieces of meat, it is suggested that the temperature should be adjusted to 180℃-200℃ for 20-30 minutes. If the temperature is too high or too low, you can't bake the right taste.

3. Pork belly is not fresh. High-quality pork belly is moderately fat and thin, and the meat quality is elastic and will not be loose. The color is bright red. If the color is dull or pale, and it smells fishy, then the pork belly is not fresh.

Some suggestions when encountering this situation:

1. Before roasting pork belly, preheat the oven and adjust the temperature to 180℃ for 8 minutes.

2. When roasting pork belly, roast it with low fire first, and then turn to high fire.

3. When roasting pork belly, the roasting temperature is about 200 degrees.

4. When selecting pork belly, see if the fat is evenly distributed, elastic, bright red and odorless, so as to select high-quality pork belly.