How big a brisket? I would cook it off as usual, let rest in foil, slice, vac seal it, store it and then when you are ready to take it to the office, put it a cooler with boiling water poured on top, add a bunch of ears of sweet corn and let them swim around with the Brisket packages. Tailgate in a cooler.
take a look at this http://www.bonappetit.com/blogsandfo...oler-corn.html
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