I've never had to warm a whole unsliced brisket before but some will say to put it in the oven at 200* over a pan of water for an couple of hours and she'll be good to go.
-Captain of Barkin Dawgs BBQ
-KCBS Judge #21924
-36" Kingfisher Combo
-New Braunfels Bandera (rescued)
-Weber 22.5" Kettle (rescued)
-A homemade trailer cooker
-Concession trailer nicknamed "The Dawg House"