2. Because chocolate is stored for too long, and the shelf life is missed, its oxidation value will increase, resulting in excessive oxidation of chocolate oil. Eating food with too high peroxide value will do great harm to human body, such as gastrointestinal discomfort, diarrhea, liver injury and so on. The storage temperature of chocolate is 5-20 degrees, and the storage temperature of composite chocolate is 8- 18 degrees. If the room temperature is too high in summer, it can be sealed with fresh-keeping bags and stored in the refrigerator. You can't open it immediately after taking it out, and you can't put the cut chocolate directly in the refrigerator to avoid frost.