Best Barbecued Root Beer Ribs

Name: Best Barbecued Root Beer Ribs
Ingredients: * 1 (approx 3 1/2 lb ) rack pork baby back rib, remove sinew; (silverskin) from back; * 1 large sheet foil, sprayed; * dry rub:; * 3/4 cup dark brown sugar; * 1 tsp unsweetened cocoa powder; * 1 tsp sweet smoked paprika; * 1 1/2 tsp hickory smoked salt; * 1 tsp dried parsley; * 1 tsp dried tarragon; * 1/2 tsp coarse ground black pepper; * 1/2 tsp dried thyme; * 1/2 tsp ground anise seed powder; * 1/2 tsp garlic powder; * 1/2 tsp cayenne powder; * 1/2 tsp cinnamon; * 1/2 tsp instant espresso powder; * 1/2 cup good root beer, (*regular, not diet); * for barbecue sauce:; * 1 cup sweet thick barbecue sauce such a sweet baby ray's; * 1/2 cup root beer; * 1 tbl dark brown sugar; * 1/2 tsp cajun seasoning such a slap ya mama; * 1/4 tsp instant espresso powder; * 1/4 tsp ground anise seed powder; * ⅛ tsp cinnamon; * 1/2 tbl butter, salted or unsalted (add last when done)