What Is This Meat?

Although it looks like a giant skewer of doner kebab meat, the meat pictured above is actually pork on a spit from Cantina Dos Segundos. How is it prepared?

First we thinly slice the pork into rounds. Then we marinate the pork for 24 hours. Then we place a large spanish onion onto the spit, followed by the pork rounds. Then we place a peeled pineapple at the top of the trompo, allowing the juice to drip down onto the slowly cooking pork.

The tacos al pastor are made with this pork.

Cantina Dos Segundos [MenuPages]
Cantina Dos Segundos [Official Site]

[Photo via Cantina Dos Segundos]

What Is This Meat?