09/10/2026
π Whatβs that white coating on grapes?
Usually, it is something natural called bloom.
Bloom is a delicate waxy coating that forms naturally on the surface of grapes. It helps reduce moisture loss and provides a protective barrier on the fruit.
Because handling can rub some of it away, visible bloom can also be one sign that grapes have been handled relatively gently.
So if you notice that pale coating, it is usually not dirt. The bloom itself is natural and harmless. As with fresh produce generally, rinse the grapes under clean running water before eating.