Clean the mushrooms (such as shiitake, oyster, etc.) thoroughly and cut them into bite-sized pieces.
Dice avocado, onion, tomato, cucumber, and other ingredients for the poke into cubes.
Heat olive oil in a pan and quickly stir-fry the mushrooms over high heat; season with salt and pepper.
Place rice in a bowl and top with mushrooms, avocado, onion, tomato, cucumber, seaweed, and other ingredients.
Mix soy sauce, sugar, vinegar, and sesame oil to make poke sauce and drizzle it over the ingredients.
Garnish with sesame seeds, scallions, and shredded seaweed to finish.