Label gallon freezer bag with recipe name, cooking directions and expiration date (todays date plus three months).
Season all sides of pork with cumin, chili powder, salt and pepper.
Blend together all sauce ingredients in high speed blender or food processor to make enchilada sauce.
Add pork and sauce to labeled gallon freezer bag.
Add leftover fresh pineapple to quart freezer bag and set inside gallon freezer bag.
Seal bag, removing as much air as possible.
Store in freezer for up to three months.