How can I tell when ground beef is fully cooked?

Question

So, how do you know that the ground beef is fully cooked when you are stir frying it on a sauce pan ?

Answer 1

Ground beef cooks quite fast. It doesn't need more than 5 minutes (depending on the base of your pan and the amount of meat of course). Just take a piece and rip/cut it open. If it's brown inside, and not red or pink, it's fully cooked.