What characteristic describes the cooking state of sautéed onions once they are ready?

The characteristic that best describes the cooking state of sautéed onions when they are ready is golden brown with a glossy finish. When onions are sautéed properly, they undergo a caramelization process, which not only changes their color to a golden brown but also develops a desirable glossy appearance. This glossiness is a result of the natural sugars within the onions being released and cooked, giving them a rich, slightly sweet flavor that enhances many dishes.

Achieving this specific stage indicates that the onions are cooked through, providing a perfect balance of sweetness and depth without becoming overly soft or losing their structure. The glossy finish signals that they are ready to be used as a flavorful component in numerous recipes, contributing both taste and visual appeal.