Slice burdock root thinly at an angle and soak in water for 5 minutes. Drain. Trim enoki mushrooms and cut into thirds, then separate by hand. Julienne the ginger.

Heat sesame oil and ginger in a frying pan until fragrant. Add beef and season with salt and pepper. Stir-fry over medium heat until the beef changes color.

Add burdock root and enoki mushrooms to the pan. Stir-fry until softened. Add the seasoning mixture (sake, sugar, soy sauce, and sesame) and cook until the liquid reduces.