My son described what he had been told about tacos al pastor
and asked me to find a cooker for his restaurant in Flamingo
Bay, Costa Rica. Interested in finding out more about this
dish, I've found nearly every taqueria in the DFW area has
this on the menu but meat and preparation vary widely. Only
one apparently used pineapple.

All searches for tacos al pastor/pastur/pasture have failed.
Any recipes would be appreciated.