There are 3 cases of the sour taste of honey, I will elaborate on it, you can check it to see where the cause is.
Normal honey sour taste
Usually the taste of honey we taste is a huge sweetness and the fragrance of honey source plants, the reason is that the fructose and glucose content of honey account for about 80%, and the aromatic substances of honey source plants will exert fragrance, so we taste basically these two tastes.
But the composition of honey is not only these two substances, there are many trace elements, such as vitamins, minerals, enzymes, etc., as well as acids that can express taste, such as citric acid, malic acid, amino acids, etc., so almost all honey will have a sour taste, but generally we can't taste it, because its sour taste is covered by a huge sweetness.
In the quality index of honey there is an indicator of acidity, the general honey acidity is low, we can not taste the sour taste of honey, but there are some unique honey inherently high acidity, so it can still taste a faint sour taste, this and honey source plants related, the sour taste of this honey is a very normal sour taste. The prickly honey collected before the family bee farm has its own sour taste, and it directly tastes the sweet and sour taste, which is very popular with customers, but unfortunately this year's drought prickly honey is not harvested.

Sour taste caused by flushing honey water
Using boiling water to flush honey will destroy the nutrition of honey, such a situation may cause some people to feel a little sour, and honey with water stirred did not drink in time, placed for a long time to drink it also has a sour taste.
Honey fermentation turns sour
Although honey is considered to be a food that will not spoil for a long time, in fact, if the maturity of honey is not high or improperly preserved, it will also deteriorate and ferment. The main reason for the deterioration of honey is the proliferation of yeast in honey, which will decompose the sugar of honey into acetic acid, alcohol and water, which is the sour taste of abnormal honey.
Honey normal sour taste and fermentation of the sour taste is very different, the normal sour taste is to taste sour, while the honey itself will not appear other physical changes, the sour taste when deteriorating, but also accompanied by a pungent strong alcohol taste, and can be directly smelled, very good identification.
I am Zhou Zhou, family beekeeping for many years, introducing bee products related knowledge, what questions you can contact me at any time, for you to answer. Personal public account and Weibo: Zhou Zhoujia.
Personal ability is limited, such as the article has omissions also welcome everyone to criticize and correct the revision, thank you