Clean and cut the cauliflower into small florets.
Blanch it in hot water for 10 minutes or you can cook it for 5 mins with salt and turmeric powder. Drain completely.
Slice the potatoes and soak in water until use.
Slit the green chilies and deseed.
Slice the onions and keep them aside.
In a bowl, take the flours and mix well with salt, turmeric powder, and red chili powder.
Slowly add water and make a thick batter, add the baking soda and beat well.
Heat a kadai with oil, when hot, dip each of the cut vegetables and gently drop into the hot oil.
Deep fry in batches and when the bajjis turn golden, drain to a kitchen towel.
Serve hot with chutney, and sauces.