To make the pork: In a small bowl, whisk together the marinade ingredients (everything but the pork) until well combined. Place the sliced pork into a large ziplock bag, and pour the marinade over the pork. Seal the bag, while removing most of the air, and massage the bag so that all the pork is coated in the marinade. Refrigerate for at least 4 hours, and up to 24 hours.

Preheat your grill to 400 degrees F. Place the pork slices on the hot grill and cook for 4-5 minutes per side, until the outside is caramelized and the pork is cooked all the way through. Set aside.

To make the spicy mayo: In a small bowl combine the mayo, grated ginger, and sambal or sriracha and set aside until ready to use.

To make the pickled carrots: Place the vinegar in a microwave safe container, and microwave for 45-60 seconds until warm. Place the carrots in a heat safe container and pour the warm vinegar over them. Refrigerate until ready to use.

To assemble: Spread the softened butter on the brioche buns, and toast them lightly on the grill or in a skillet. Spread both sides with the spicy mayo, and layer in slices of the pork with the pickled carrots, sliced cucumbers, sliced jalapeño, and cilantro. Serve immediately.