I found an article in the Seattle Times that approximates their recipe for their roast pork sandwich.
It involves marinading the pork in a mix of orange and lime juice, garlic, onion, fresh oregano, and a few other items for 24 hours. I wanted to try it with chicken too, so I threw a couple chicken thigh/leg quarters in with my free range natural Pork shoulder.
A couple other items to prepare include; a big batch of caramelized onions, a garlic Mayo with sweet Relish.
Step 1 Make the marinate - I put the pork and chicken in a ziplock bag overnight
Step 2 Make the Bread - Of course you could buy some - But what's the fun in that. After much searching I decided an Italian style bread would work well . I used Peter Reinharts Italian bread recipe except than I used my sourdough to create the Biga. The rolls were cooked in a 500 deg wood fired oven - they only took about 15 min to cook.
Step 4 - Make the Sandwich - What can I say - fresh made Bread, lightly toasted , spread with garlic/relish mayo , layerd with pickled jalapenos, cilantro, Romain lettuce , a heaping portion of meat and caramelized onions. - One of those tortas you need a bib for, and cannot put down !