Many people may think that only sweet foods contain sugar, and the sweeter they are, the more sugar they contain. In fact, the sweetness and the amount of sugar, sugar, fast and slow really does not have a necessary relationship. Fruit is a food we eat every day, more or less sugar, but more sugar in the fruit is not necessarily sweet, there is a kind of fruit is not sweet at all, but the sugar content is very high. First look at the following two pictures:

Find it, not sweet. That's hawthorn! Hawthorn is actually quite sour, but the sugar content is very high, 100 grams of hawthorn surprisingly contains 22 grams. So much sugar why not sweet? ---Because it's sour! Sourness inhibits sweetness. You can't taste the sweetness. But there is a lot of sugar! Ice candy gourds are even more sugar on top of sugar! And the hawthorn strips, hawthorn slices, and hawthorn cakes we eat, if you've ever made them yourself, you know that you have to add big handfuls of white granulated sugar or rock sugar to make them taste less sour.