Final answer:
The belief that clear juice indicates a burger is done is false; the only reliable method to determine if a hamburger is cooked is by using a meat thermometer to ensure it reaches an internal temperature of 160°F (71°C).
Step-by-step explanation:
The statement that clear juice should indicate that a hamburger is done is false. While clear juices can be a sign that a hamburger is no longer releasing pink or red juices, which can indicate raw meat, the only reliable way to ensure a hamburger is properly cooked is to use a meat thermometer. The internal temperature should reach at least 160°F (71°C) to safely consume, according to food safety guidelines. Color and juices can sometimes be misleading due to differences in meat composition, cooking methods, and the presence of seasonings or marinades.