Before drying onions, a series of preparations need to be carried out to ensure that the drying process goes smoothly and high-quality drying results are obtained. Here are some major preparations:

  1. Onion preprocessing: including washing, peeling and slicing. Washing can remove dirt and pesticide residues on the surface of onions; peeling is to remove the parts that are not easy to eat; slicing can help speed up the drying speed and improve the drying effect. When slicing, it is recommended to use a professional slicer to cut the onions into 3~5 mm pieces to facilitate drying.

  2. Screening and quality testing: Preliminary screening can remove damaged or diseased onions, while quality testing evaluates the quality of onions to ensure that the quality of onions entering the drying process meets the requirements.

 3. Selection and preheating of drying equipment: Select suitable drying equipment to ensure that the equipment reaches the appropriate drying temperature.

  In addition, packaging materials and quality testing equipment need to be prepared so that the onions can be packaged and quality tested after drying is completed.

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