What type of jewelry is allowed on hands and arms while preparing food?

In a food preparation environment, safety and hygiene are paramount. A plain metal ring is typically allowed on hands and arms because it does not create any risk for contamination. It is smooth and does not have any stones or intricate designs that could trap food particles or bacteria. This type of ring is also less likely to cause injury or snag on equipment, making it conducive to maintaining a safe working environment.

Other types of jewelry may pose safety hazards or hygiene concerns. For instance, bracelets can move around during food preparation, potentially leading to cross-contamination or catching on surfaces and equipment. Earrings can also pose similar risks, as they might fall into food or become a hygiene issue. Watches, while generally considered to be less risky than other accessories, can still carry the potential for contaminating food or getting caught in machinery. Thus, the plain metal ring is the safest choice when it comes to wearing jewelry in a culinary setting.