Grill eggplant, king oyster mushrooms, and pork loin with sauce for 3 minutes and serve over rice—easy and done.
Slice the eggplant and king oyster mushrooms into bite-size pieces.
Thinly slice the pork loin and season with salt and pepper.
Heat oil in a pan and grill the pork loin on both sides.
Add the eggplant and stir-fry, then add the king oyster mushrooms and stir-fry together.
Season everything with soy sauce, oligosaccharide syrup (or erythritol), and mirin, mixing well.
Serve the stir-fried ingredients over rice and garnish with chopped scallions.