Cut potatoes into quarters and put in a pot of boiling water. Simmer until soft (around 10 minutes) and then drain.
Mash potatoes roughly so there are still some chunks left.
In a pan saute the onion and oil for about 5 minutes or until soft.
Combine all ingredients in a bowl (except oil, sesame seeds and parsley) and mix well.
Put the sesame seeds on a plate.
Measure out ½ cup of the potato mix and roll into a ball with your hands. Roll in the sesame seeds so it is liberally covered. Repeat with remaining potato mixture.
Heat a non-stick frying pan with a little oil. Fry cakes for around 3 minutes each side or until lightly brown. Sprinkle with parsley and serve.