Hello, I will answer your questions as follows. Inferring from the pinyin input method, the question you should ask is whether the coconut juice is slightly sour.

1 After the normal coconut green is opened, the coconut juice should be sweet and slightly salty. Generally speaking, insensitive people can't drink this avant-garde and feel sweeter.

Part of the coconut green takes a long time to transport, and the coconut juice is slightly sour, which can be ignored. This is also within the normal range.

If the coconut juice has obvious sour taste, it may be that the coconut green has been transported for a long time and there is a slight gap, which leads to the deterioration of the coconut juice. It's best not to use this method of delaying souring to avoid food poisoning.

I hope this answer can solve some of your problems, and you can adopt what you like. I wish you a happy life.