Mix batter ingredients well together. Shred sweet potato and yam with a vegetable shredder.
Add the vegetables to the batter.
Mix in onion, spring onion, coriander leaves and red chilies.
Stir until well combined. Heat up oil until hot over medium high heat.
Drop a heaped tablespoon of the battered vegetable ingredients into the oil.
Deep-fry until golden and crispy.
Finish off with the rest of the ingredients. Remove the fritters and drain well.
Place them on absorbent paper.