Preheat your grill or set your grill pan over medium heat.
Brush the corn tortillas with water and sprinkle with salt to taste on both sides. Place on the grill and toast for a couple minutes on one side. Remove and top the toasted side with 3-4 tablespoons grated cheese, then place back on the grill cheese side up. Toast until the cheese melts and the tortillas become crusty and browned.
Transfer to a platter, top with a generous amount of diced short ribs, and let your guests top with guacamole to their liking.