Add potatoes in a bowl. Add corn flour, salt, and white pepper powder. Mix well and set aside for twenty minutes
Heat two tablespoons oil in a non stick pan. Add onion roundels and sauté for two minutes or until pink. Add garlic, garlic paste and sauté for half minutes.
Heat oil in a kadai. Deep fry the potatoes till crisp. Drain on an absorbent paper and add to the onion-garlic mixture.
Add green chillies, soy sauce and MSG and mix well. Check the seasonings. Add vinegar and mix well.
Add spring onion for garnishing
and serve hot....