the process of quick-frozen sweet potatoes generally includes the following steps:
1. picking: sweet potatoes should be picked during the optimal ripening period to ensure taste and nutritional value.
2. cleaning: put the sweet potatoes into clean water and gently scrub away the soil and impurities on the surface with a brush.
3. peel: use a knife to peel off the outer skin of the sweet potato, making sure to remove the skin and surface defects.
4. cutting: cut the sweet potatoes into appropriate sizes and shapes, usually into blocks, slices or strips.
5. pretreatment: sweet potatoes can be pretreated, such as soaking in water containing antioxidants or acidic solutions, to prevent oxidation and pigment changes.
6. cooking: sweet potatoes can be cooked by steaming, boiling, or frying to get the desired texture and taste.
7. cooling: place the cooked sweet potatoes in a cooler to allow the temperature to drop quickly.
8. packaging: pack the cooled sweet potatoes into quick-frozen packaging bags or containers to ensure sealing.
9. freezing: put the packaged sweet potatoes into quick freezing equipment for freezing. generally, the quick freezing temperature is below -18℃.
10. storage: store quick-frozen sweet potatoes in a refrigerator or freezer to maintain their freshness and quality.
11. transportation and sales: quick-frozen sweet potatoes can be transported to various sales points, such as supermarkets, catering establishments, etc., for consumers to purchase and eat.
it should be noted that the specific process may vary depending on product type, production scale and process requirements.
in addition, in order to ensure the quality and safety of quick-frozen sweet potatoes, relevant food safety standards and operating practices should be followed.