The color of pistachio nuts is green, fresher than yellow, and pistachio that has been stored for too long is not suitable for consumption. If many pistachios purchased have oil and taste, it is too long. It is best to lose it.

The natural opening is better than the robotic opening. The mature pistachio shell will split open automatically. If it is not ripe, the processor will use an external force to clamp it. If we look closely, we will find that the opening edge of the fruit shell of such fruit tends to be crooked. You can try to close the purchased pistachio shell. If it can be completely closed or there is only a small slit left, it is artificially opened. The natural opening is often split and a large slit is completely closed.