This is especially a helpful tip for IBS sufferers who like beef but not the grease. Get a wire-mess colander and run hot water over that freshly cooked beef for a minute or so. You rinse a lot of that grease out and you do your innards a good deed.
We do this when we need beef in a casserole, lasagna, or Hamburger Helper, etc. I don't pay for it the next day.