Longhorn Brisket Taco John Walley · January 28, 2017 We made a brisket taco today, and the brisket was the taco shell. Used a Longhorn brisket flat from our friends at Dear Run Land & Cattle Co. that weighed in around 7 pounds. Rub applied, and placed on a V-rack on the Big Green Egg Smoked over oak for about 8 hours. Almost done. Dressed with queso, guacamole, pico de gallo, sour cream, Yellowbird sauce, and some lettuce on the side. Yes, it was good.