I am smoking 3 tri-tips for Christmas eve dinner. I have done several and they are wonderful but I want to do them in advance. What is the best way to reheat them? I was thinking of leaving them whole. Slicing them when cold. My mom has one of those buffet serving crock pot that heats food or you can add water to steam. Was think of doing that and adding the water so the meat stays moist. Any better suggestions on reheating the tri-tip?