You can look at it from three aspects:

Look at the appearance. The appearance of jujube smoked by sulfur is particularly smooth, as if waxed. Good jujube is dark red and the surface is not smooth;

Secondly, look at the color. The red dates that have been smoked by sulfur are "red" and "fresh", and the color is more consistent for one piece or several kilograms; the red dates that have not been smoked are dark red, with dark or light colors;

Thirdly, look at the inner layer. You can bite a few open to taste or smell them. The sulfur-smoked red dates are a bit sour and have a pungent smell. Good jujubes have a real jujube aroma.

Jujube, also known as jujube, belongs to the phylum Angiosperm, class Dicotyledon, order Rhamnaceae, Rhamnaceae, and genus Jujube. Its vitamin content is very high, and it has the reputation of "natural vitamin pill". It has the effect of nourishing yin and yang, and replenishing blood.

Jujube is a temperate crop with strong adaptability and wide planting range. Red dates are known as "hardcore crops" and are resistant to drought and waterlogging. They are the first choice for developing water-saving forestry and fruit industries.