sentence: harshly boil potatoes and sweet potatoes for 5-7 minutes sentence: heat some oil in a pan and cook chopped onions in it sentence: further chop the cooked onions sentence: shred the potatoes and sweet potatoes to a bowl and add the cooked onions sentence: season with garlic salt black pepper and chilli powder sentence: give a good mix to combine them sentence: shape the mixture into small patty and fry in a pan with some oil