there are five requirements for heavy oil for catering. Heavy oil for catering refers to edible oil used for cooking and stir-frying.

1. food safety: heavy oil for catering must meet food safety standards and contain no harmful substances or pollutants.

2. quality standard: heavy oil should have good quality, such as transparent color, pure taste, no peculiar smell and no impurities.

3. Selection of raw materials: The raw materials of heavy oil should come from healthy and safe vegetable oils, such as soybean oil, peanut oil and rapeseed oil.

4. Oil frying performance: Heavy oil should have suitable oil frying performance, such as high temperature resistance, good stability and no easy generation of smoke.

5. storage and transportation: during storage and transportation of heavy oil, relevant hygiene requirements should be observed to ensure the quality and safety of oil products.

6. Labeling and packaging: Heavy oil should be clearly labeled and packaged, such as production date, shelf life and ingredient list information.