Place the pork in a large heavy bottomed pot. Add the pineapple juice, lime juice, garlic, jalapeños, cumin, salt and enough water to just barely cover the meat.
Bring the pot to a boil and then reduce the heat to a simmer. Simmer uncovered for two hours. Don’t touch the meat.
After two hours, increase the heat to medium-high heat. Continue to cook for about 45 minutes, until all of the liquid has evaporated, leaving only the pork fat. Occasionally stir and turn the pork during this process.
Once all the cooking liquid has evaporated, let the pork cook and sizzle in the fat long enough to brown at the edges, turning pieces gently, as needed. The more you stir, the more the meat will fall apart and shred.
Once the pork has browned and most of the fat has cooked off, it’s ready! Adjust seasonings to taste and serve as desired!
