Bring a saucepan of salted water (1 tsp salt to 1 litre water) to a boil. Add potatoes and cook for 6-8 minutes until soft but not mushy. Drain well; place in a bowl and mash with a fork or potato masher. Allow potatoes to cool slightly.
Add egg and cream, and mix well. Stir in flour, corn and coriander leaves.
In a bowl, using a whisk for electrical beater, beat egg white until soft peaks form. Gently fold egg white into corn mixture and season with salt and pepper.
Warm oil in a frying pan over medium fire. For each fritter, spoon 2 tbsps corn mixture into hot pan. Cook fritters until golden, 2-3 minutes per side. Remove from pan and drain on paper towels. Keep warm in a preheated 110 C oven.