Clean the spinach, wash thoroughly several times and drain. Peel onion and garlic, finely dice onion, press garlic through a garlic press. Heat oil in a pot, fry onions and garlic in it and add the spinach.
Cover and allow to collapse over medium heat. Season spinach with pepper and a little salt. Add 6 tablespoons of soy sauce and approx. 5 tablespoons of water and steam covered for approx. 5 minutes. Meanwhile roast sesame seeds in a pan without fat, take out immediately and let cool down.
Wash the salmon fillet, dab dry and cut into 8 slices. Do not wash Enoki mushrooms, just cut off the root piece. Season spinach with soy sauce and mix in enoki and half of the sesame seeds.
Heat the fat in a pan and fry the salmon stalks for about 2 minutes, turning them over. Season with pepper, remove from the pan and drizzle with approx. 4 tablespoons of soy sauce. Sprinkle with some sesame seeds.
Arrange enoki spinach and salmon on plates and sprinkle with remaining sesame seeds.