Easy Carne al Pastor (Mexican Shepherd-Style Pork Tacos)

Steps

1. 1
   Boil the tomatoes until soft to prepare the green salsa base.
2. 2
   Devein and seed the guajillo and ancho chiles.
3. 3
   Heat oil in a pan and sauté the garlic and a slice of onion, then add the chiles and fry until lightly toasted.
4. 4
   Add a small amount of water to help soften the chiles.
5. 5
   Cut the remaining onion in half and slice into half-moons for later use.
6. 6
   Blend the softened chiles, garlic, and onion into a smooth adobo sauce.
7. 7
   Pour the blended adobo over the cut pork pieces and mix well to coat.
8. 8
   Add the sliced onion half-moons and chopped pineapple, then let the pork marinate.
9. 9
   Blend the boiled tomatoes with the reserved chile-cooking water and onion to make the green salsa, then let it cool.
10. 10
    Once marinated, cook the pork in a pan with hot oil until fully cooked and nicely browned.
11. 11
    Remove the cooked pork from the pan; the carne al pastor is now ready.
12. 12
    Fill corn tortillas with the pork to make tacos, adding a squeeze of lime if desired.