Preheat the oven to 220-degree Celsius. Line the baking tray with parchment paper.
In a large bowl, add rice flour, cornflour, black pepper and salt. Whisk everything together.
Pour water and oil. Then add garlic paste. Give them a good whisk and make a smooth batter.
Add the cauliflower florets. Toss well. Make sure all the florets are coated with the batter.
Then place the cauliflower florets on the lined baking tray.
Bake for 30 minutes.
Take the tray out and brush the teriyaki sauce over the cauliflower florets. Place the tray back in the oven.
Then bake for 15-20 minutes.
Sprinkle sesame seeds and spring onions over them. Serve Hot!