In a large mixing bowl, add rice milk, flour, garlic, and onion powder. Whisk until well combined. Add the cauliflower to the batter in the bowl, and toss to combine. Remove the pieces of cauliflower, one by one, and remove excess batter.
¾ cup Rice flour, 1 tsp Paprika powder, 2 tsp Garlic powder, 1 tbsp Onion powder, ¾ cup Rice milk