I'm glad you asked this question! Every week when I'm shopping at our international market, I pass the beef tongue and I've often wanted to give it a try; now I think I will. The link below is a recipe I found on the Bradley smoker website:
Super fast Purple Thermapen
Custom Reverse Flow 55 Gallon Drum Offset
Weber SS Performer date code EE
Weber 18 and 22.5 OTS Kettle w/Marty's handles
Smokey Joe Silver w/wooden handle a.k.a. Mini Me
Weber Smokey Joe Platinum date code ER
Sipsey: Secret's in the sauce.