Optional toppings: Cubed fresh pineapple, cubed avocado and queso fresco
Puree the first nine ingredients in a blender; stir in beer. In a 6-qt. electric pressure cooker, combine pork and pineapple mixture. Lock lid; close pressure-release valve. Adjust to pressure-cook on high for 3 minutes. Quick-release pressure. A thermometer inserted into pork should read at least 145°. Press cancel. Stir to break up pork.
Stir cilantro into salsa. Using a slotted spoon, serve pork mixture in tortillas; add salsa and toppings as desired.Freeze option: Freeze cooled meat mixture and cooking juices in freezer containers. To use, partially thaw in refrigerator overnight. Heat through in a saucepan, stirring occasionally.