You cannot eat homemade canned hawthorn once it has fermented. A layer of white foam on the top means it has gone bad, so it is best not to eat it.

Two points should be paid attention to when making homemade cans

1. When filling cans, ensure a high temperature of 85 degrees

2. The caps of the cans must be tightly closed to prevent air leakage. . It has been stored for a year without any problems, without any preservatives.