Mine is pretty close to this. Haven’t made any in a while so trying to remember. Something like: 3 tbsp Worchestershire, 2 tbsp soy, 2 tbsp A-1, 1 tsp liquid smoke, 1/4 tsp salt, 1/4 tsp, garlic powder, 1/4 tsp brown sugar (per pound of roast)
Get something with as little fat or marbling as possible. (Made that mistake before) I’ve tried the oven but prefer the dehydrator. The dehydrator will do about 3 lbs of roast at a time.
Oh, yeah. Use 1 drop of Dave’s Insanity sauce per pound of beef to kick it up a notch. Don’t use any more or your butt will hurt the next day. (made that mistake before, too.)