In this case, “La” is not a definite article referring to “Tex-Mex”, it’s an abbreviation referring to the first name of the co-owner LeAnn Mueller, granddaughter of the founder of Louie Mueller Barbecue. The brisket here is cooked for 12 to 15 hours at about 275 degrees, and has a smoke ring of perfection. Like most BBQ trucks in Texas, they are open til they sell out. Get there at 11am when they open to guarantee yourself some lunch. Come on the weekend and there is free beer Friday through Sunday! The BBQ is amazing just the way it is, but try a little of their vinegar based sauce as well, icing on the cake! What did we order? 1 pound of lean brisket, beef ribs, The buttermilk bacon potato salad.