what would grandma have done with this beef broth...?

[Corn Woman]

Same here hard boil.

 

[Britesea]

I've had times when I was making bone broth and didn't have time to can it. As long as I brought it to a hard boil for 10 minutes at least once a day, I've kept it going for more a week or more, until I had time to can the stock. It just gets richer as the water boils away.