Decisions, decisions, decisions. I always struggle with what meat to order at the Baby Back Shak. Their baby back ribs are the best is Dallas, bar none. The smoked chicken is among the best I've ever tasted and the other meats follow in this tradition of excellence. We've written several times over the past year about the Shak, the unofficial headquarters of the Texas BBQ Posse. What I've neglected to mention is their boudin, one of the best and most unusual sides, or Shaksessories, you can get at a Texas BBQ joint. By definition, boudin is a Cajun sausage stuffed…