Currently, the state regulations stipulate that bottled honey has a shelf life of 18 months. However, capped mature bees with high concentration can also have a shelf life of many years. But eating honey fresh is good, because fresh honey is generally better color, aroma, taste and texture. Honey that has been preserved for a long time can be consumed as long as it has not deteriorated and will not be harmful to the body. It is just that the nutritional value of long-lived honey is slightly worse than that of fresh honey.

Second, on whether the deterioration

Honey will deteriorate after a long time, manifested in three ways:

One is the flavor becomes more acidic;

The second is to become very thin (normal honey is very viscous, the top quality of cinnamon honey and can even be wrapped with a clean paper, rather than with a bucket or bottle, see the degree of its viscosity). Honey spoilage is mainly due to increased temperature, so a refrigerator can solve this problem.

Three is the honey above the appearance of many gray bubbles, indicating that the honey in a part of the decomposition of organic matter, fermentation bubbles, into gas overflow, at this time, even if the honey has not yet deteriorated, but the nutritional value has been reduced.

Three, on whether you can eat

One: smell Single-flower honey has the plant's unique floral flavor, mixed honey has a natural floral flavor breath, fake honey is sucrose flavor, there is a spice flavor.

Second: Eye View

1. Look at the concentration of honey, take a chopstick and insert it into the honey and lift it vertically. The high concentration of honey down the slow trickle, viscous large can pull silk, broken can be contracted into a honey ball. Fake honey or low concentration of honey is the opposite, even if you can pull long silk, broken silk is not flexible, will not shrink into honey beads.

2. You can take a drop of honey and put it on the newspaper. Pure honey with a high concentration is hemispherical and not easy to soak through the newspaper, while honey with a low concentration or fake honey is easy to soak through the newspaper.

3. Take a glass of water and add a little honey to it. Real honey will quickly sink to the bottom of the cup, not easy to melt, and when stirred slowly with chopsticks, there will be a silky streak. If it is fake honey, it will quickly dissolve into the water.

4. Look at the crystallization of honey, the crystallization of honey and its plant species and temperature related to the general natural honey in the 13 - 14 degrees Celsius when easy to crystallize. The honey that can all crystallize generally contains low moisture, high concentration, not easy to deteriorate, so it is high quality honey. Pure crystallized honey is delicate to the touch and has no sandy feel when rubbed by hand. Fake honey, not easy to crystallize, or precipitate part of the precipitate is hard, not easy to rub.

Three: taste Pure natural honey, sweet taste, slightly acidic, soft and delicate texture, soft and soft, slightly spicy throat, the aftertaste of the long-lasting fragrance. The adulterated honey taste sweet, but mixed with sugar or spice flavor, throat feeling weak, and the aftertaste is thin and short.

In short, to identify the authenticity of honey, a single method may have some errors, you can apply a variety of methods to identify a kind of honey, in general, you can determine the authenticity of honey.