What is the most common kosher issue in fruits and vegetables?

In the context of kosher dietary laws, insect infestation is a significant concern when it comes to fruits and vegetables. According to these laws, any presence of insects or specific pests renders the food non-kosher, or "treif." This is particularly important because many fruits and vegetables can be hosts to various bugs and insects, which are often not visible to the naked eye.

The process of ensuring that produce is kosher involves thorough washing and inspecting to remove any insects. Many kosher observers will inspect and sometimes even avoid certain types of fruits and vegetables known to be prone to infestation unless they are confident in their kosher status. This rigorous attention to detail underscores why insect infestation stands out as the most common kosher issue compared to concerns like chemical coatings, genetically modified organisms, or pesticide residues, which may not directly impact the kosher status of the food in the same way.

While chemical coatings, GMOs, and pesticide residues may raise other health or ethical concerns, they do not present the same immediate challenge to the kosher status as insect infestation does.