At least 3 hours before cooking (preferably the night before), whisk together marinade ingredients in a shallow bowl. Add raw pork, cover and refrigerate for at least 2 hours to marinade.

At least 2 hours before cooking, boil water, rice vinegar, sugar and salt in a saucepan about a minute, stirring until sugar dissolves completely. Let pickling liquid cool while chopping daikon and carrots into matchsticks. Pour cooled pickling liquid over daikon and carrots in a bowl so they stay submerged, cover, then refrigerate for an hour.

Make sriracha mayo by whisking together in a bowl (can be done whenever)

Cut cucumber into small matchstick length slices, but a bit wider, similar to sliced pickles in a jar, set aside. Take leafy cilantro bits off of the stems and set aside in a pile. Slice lime in quarters. Slice jalapenos after de-seeding/removing the membrane.

Cook pork on grill over high heat ensuring black marks, it won't take long, maybe 3-4 minutes per piece. Slice meat into small strips. Meanwhile cut bread open and scoop out a good portion of the middle - this can be set aside to dip in the sriracha mayo on the side ;)

Toast bread while meat is cooking, ensuring it is toasted on the inside where it was cut (spread it open so the heat hits the white part) Spread sriracha mayo on bread liberally, then add meat into the hollowed out part of the bread.

Drain Do Chua, add to sandwich on top of the meat, along with cucumbers on the sides of the meat against the bread. Sprinkle cilantro and jalapenos on top, and enjoy!