Steam the florets for 5-10 mins.
Mix cornflour,salt and red chilli powder
Dust the florets in cornflour powder evenly.
Heat oil in a pan and saute' cauliflower florets for 3-4 minutes.(or line them on a grill tray(refer steps pic and spray them with oil, bake at 160 degree C ,fan forced for 20-25 minutes)/ Or you may fry them in oil to get a more crispier version
Keep it aside.
In the pan,heat the oil and add sliced ginger, garlic and onions.Mix well.
Add green and red capsicums along with salt and saute' till they soften.
Add soy sauce,tomato sauce,vinegar,red chilly powder and sugar to this vegetable mix followed by green onions.
Mix well with a spatula and let it cook on low flame.
Add the cauliflower florets to this mix and cook for 3-4 minutes.
Serve hot with chilly/tomato sauce.