All ingredients ready? Let's begin!
Boil or soak your rice cakes according to the package directions to soften them. Drain the cakes and pull them apart if they become stuck together and set them aside.
In a small mixing bowl, whisk together the garlic, tamari, oyster sauce, vinegar, and brown sugar to combine well. Set the sauce aside so the sugar can dissolve.
In a wok or large skillet over high heat, warm the oil.
Once hot, add the pork strips and cook for 1 minute, tossing a few times.
Add the scallion and cook for another minute, tossing a couple of times.
Stir in the rice cakes and 4 tablespoons of the sauce. Cook for about 2 minutes until the cakes start to soften and the sauce reduces.
Add the cabbage, spinach, and the remaining sauce and stir fry until the greens have wilted, approximately 2 to 3 minutes. If the sauce is too thick, thin it with a spoonful (or more) of chicken stock or water. Test a rice cake to make sure it has softened but is still a little chewy.
Serve immediately while hot with the toasted sesame oil drizzled over the top.