It should be formed by the concentration of sugar after the water content is reduced.

Longan meat is generally black, and the yellow color may be due to incomplete drying or the addition of brown sugar

Distinguish true and false longan meat:

1 . There are profiteers on the market who smoke sulfur or add gypsum powder to make the longan meat look good. In order to increase the weight and sweetness of the longan meat, they add white sugar or brown sugar. Sugar-added longan meat is easier to see. Sugar-added longan meat is generally not made too dry. If it is too dry, the powdered sugar will be exposed inside and outside the longan meat. As long as you hold the longan meat in your hands for a while, you can feel it. If the longan is mixed with sugar, your hands will be sticky. If the raw longan is not dried too much, it will stick to your hands a little, but it will definitely not be sticky. Huhu feeling. The function of sulfur is to bleach, because during processing, if the technology is not good enough, the color of the longan will often become dark and black, which will affect the quality of the longan. ?

2. It is not difficult to identify longan meat with added sugar, because the taste of white sugar or brown sugar is still very different from the sweetness of longan, and it will taste too sweet and greasy. Moreover, longan The fragrance will appear very light. The smell of sulfur-smoked longan meat is also easy to "smell" out. This kind of longan will have a sulfur smell, which is sour and not delicious.

3. The longan meat smells fragrant, but the longan meat added with sugar and smoked sulfur loses the strong longan meat aroma and smells like white sugar or sulfur. If you want to distinguish it more clearly, After drying in the sun, the sugar-sweetened longan meat will smell like brown sugar, while the sulfur-smoked longan meat will have a strong smell of sulfur.