In a dutch oven or similar type of thick pot with a lid, add the water, soy sauce, and frozen spinach. Put the lid on and simmer the mixture over low heat for a couple minutes until the spinach has thawed completely. Stir to break apart the spinach.

Season fish with a pinch of salt.

Add ginger and green onion whites to the pot, then add the mushrooms, then top with the fish.

Cover the pot and steam the fish 6-8 minutes until fully cooked. Top with sesame oil and green onion greens and serve.

Add minced onions and lime juice to a bowl. Allow to sit for a few minutes to help break down the strong flavors of the onion.

Meanwhile, prepare the avocado and tomato.

Add the cubed avocado, diced tomato, oil, and all seasonings to the onion and lime; mix until coated.

Serve chilled.