What's beef broth made of?

[otterlyslick]

I'm curious about what goes into making beef broth. I've always wondered about the main ingredients and how they're combined to get that rich flavor. Can anyone share some insights on what typically goes into a pot of beef broth?

 

[SyaoRan]

When making beef broth, you'll need beef, specifically bones with marrow. You can also add meat for extra flavor. You will also need vegetables, such as onions, carrots, celery, and garlic.