1. Appearance: Good dried blueberries have dark appearance, crystal clear surface, no unevenness, no obvious color inconsistency or black spots.
2. Elasticity: A good dried blueberry should be elastic, soft to the touch, neither too hard nor too soft when broken, not easy to break and not easy to deform.
3. Smell: The smell of good dried blueberry fruits should be fresh and natural, with no peculiar smell or musty smell.
4. Brand: Choose dried blueberries with relatively guaranteed brands, such as well-known manufacturers or certified organic foods.
It should be noted that dried blueberry fruits are easily affected by humidity, high temperature and direct sunlight, and should be stored in a cool and dry place to avoid the above effects, avoid long-term storage and eat as soon as possible.