1. Hard dry cheese needs to be kept in a sealed container for refrigeration after grinding, so that the storage period can reach about 2 weeks. If you want to keep it for a long time, you need to freeze it.

2. Coat the cheese with vinegar, then wrap the cheese with paper towels and keep it in the refrigerator.

3. If the uncut cheese can be kept in vacuum in a fresh-keeping bag, you can put a few alcohol cotton balls around the opening, or you can put a few in the bag and then put them in the refrigerator for freezing.