What are the different ways of preserving food? how are they done?​

So basically In drying,we gotta dry the substance to preserve it for later just like wheat is dried before storage.

preserve means to save it by applying some other things in it like pickles.

refrigerating , I think you know about it ,AM I RIGHT?

fermentation is the process by which wines and alcohol are prepared by decaying the thing and then passing it through chemical process.

now , pasteurization is the process which keeps your milk in packet ready to use,in this process the substance is heated at a very high temperature and then immediately cool down