Prepare the beef, shrimp, fish cake, and assorted vegetables (bok choy, cabbage, mung bean sprouts, shiitake mushrooms, potatoes, etc.) into bite-sized pieces.
Heat oil in a pan and stir-fry mala sauce (mala paste, doubanjiang, etc.), minced garlic, and green onion until fragrant.
Add the beef and shrimp and stir-fry over high heat.
Add the remaining vegetables and fish cakes, and stir-fry quickly over high heat.
Season to taste with salt, pepper, and soy sauce.
Finish by sprinkling with sesame seeds, cilantro, and any desired toppings.