When is it deemed safe to use a metal skewer for grilling?

Using a metal skewer for grilling is deemed safe when it has been preheated and handled carefully to prevent burns. Preheating the skewer helps ensure that the food cooks evenly and allows for better flavor development. It also minimizes the risk of the skewer conducting cold temperatures into the food, which can affect cooking times.

Moreover, careful handling is crucial because metal can become very hot during grilling, increasing the risk of burns if not managed properly. By using the skewer with caution, such as wearing gloves or using a tool to manage the skewer, the risk of injury is greatly reduced. Thus, the combination of preheating and careful use constitutes the best practice for safe grilling with a metal skewer.