Answer:

- Natural goji berries are dark red, the color of the seeds varies. When squeezed hard, the hand has no color or a slightly yellow color, and it will disappear after washing. Bright red, the color of the seeds is even

- Sulfur-smoked goji berries When squeezed hard, the hand sticks to the red color, and it is difficult to remove the color when washing

- Real goji berries: The fruit is firm, oval, with small ends and slightly flat. The color of the outside is bright red or dark red, with many messy wrinkles, and is slightly shiny. The head of the fruit is cylindrical, the stem is white. The fruit shell is soft and elastic, the flesh is soft, and inside there are many round kidney-shaped seeds, light brown-yellow in color, and sweet in taste.