Place the ground pork and sliced blade steak in separate bowls and set aside.
Place the shallots, scallions, garlic, red chili, salt and sugar in a food processor. Blitz until the mixture resembles mulch. Pour in the fish sauce and blitz again until cohesive.
Divide the marinade between the two bowls. Toss to coat the sliced pork and cover tightly before transferring to the fridge. Using a clean hand, mix the marinade into the ground pork until cohesive. Cover tightly and transfer to the fridge. Leave the two bowls to sit for at least an hour.
Once the hour has passed, form the ground pork into small meatballs. Use a heaping tablespoon as a guide. Flatten the meatballs and transfer to a hot griddle. Grill roughly 3 minutes a side, then transfer to a large bowl.
Add the sliced pork to the griddle and cook for 1 minute a side or longer depending on how thick the pork is cut. Transfer the meat to the same bowl and keep warm until ready to serve.