1. If you want to make pineapple sweet, you can cut it into small pieces and soak it in salt water for about 30 minutes. You will find that it tastes sweet, because pineapple pulp contains a lot of organic acids besides vitamin C and sugar, such as malic acid and citric acid, which can decompose some organic acids in pineapple into salt water and make pineapple taste sweeter.

In addition, pineapple also contains oxalic acid, which will affect the absorption of calcium and iron by human body. Soaking with salt will also neutralize its acidity and reduce possible harm to the body. The salinity of salt can improve the sweetness of pineapple.