What is white haze on grapes?

White haze on grapes is typically a natural waxy coating known as "bloom." This protective layer helps keep moisture in and prevents decay, serving as a barrier against pests and pathogens. While bloom is perfectly normal and safe to eat, excessive white haze can also indicate mold or spoilage, so it's important to inspect the grapes carefully. Washing the grapes before consumption can help remove any unwanted residue.