The Posse digs into a platter of smoked meats at Bet the House BBQ in Denton. (Photo ©Chris Wilkins/Texas BBQ Posse) Rick Gosselin is one of the foremost football experts in the country. When he says the Dallas Cowboys offense is not yet ready for the regular season, as he did this past weekend, fans — and the Cowboys — should take serious notice. The Dallas Morning News columnist also knows barbecue. A couple weeks ago, he emailed us about a new place in Denton, Bet The House BBQ, where he had just eaten. “Brisket was awesome,” he wrote, encouraging…