Soak dry kelp in 1 cup of cold water for 15 min. Save water to use for cooking. Discard kelp.
Soak rice cake in cold water for 10-15min. Discard water.
Into a pan, add water, broccoli and salt. Close lid and simmer until broccoli is slightly undercooked. Set broccoli aside for later. Discard water.
Bring the same pan back and set to medium high heat. Add sesame oil, garlic and spring onion. Stir fry until fragrant.
Set temp to high heat and add meat to the pan. Stir fry meat, when half way done, add sake. When meat is almost done, add rice cakes, kelp water (½ to ⅔ cup) and soy sauce marinade. Set heat to medium. Stir fry for 1-2min.
Add vegetables and stir fry until rice cake is soft. Add more kelp water if needed to avoid sticking to the pan.
Turn off heat. Drizzle with sesame oil (optional) and sprinkle sesame seeds.