Preheat oven to 450°.
Cauliflower Rice: Put cauliflower in food processor. Pulse until you get a rice consistency. Spread on a baking sheet. Drizzle olive oil, salt, and pepper on top.
Cook at 450° for 10 minutes. Stir and cook another 5-10 minutes or until tender. Tofu: Slice drained and pressed tofu into cubes or triangles. Dredge in corn starch.
Heat enough vegetable oil in a pan to cover pan. Add tofu. Cook on both sides until crispy and browned.
Teriyaki Sauce: In a saucepan combine tamari, mirin,
brown sugar, garlic, white and light green parts of green onion. Cook over medium high heat until sugar dissolves. In a bowl, dissolve corn starch in water. Add to pan with teriyaki sauce ingredients.