Many home cooks and grill masters cook up their steaks and hamburger patties using the old-fashioned eyeball test. This is when you flip the patty after it turns brown and grill marks start appearing.
Add Yahoo as a preferred source to see more of our stories on Google. A digital meat thermometer sticks out of a steak on a grill - Dmitry Naumov/Shutterstock Many home cooks and grill masters cook up ...