Combine mashed potatoes, corn, coriander, cheese and egg together in a large mixing bowl. Mix in just enough flour until you can form a patty without the mixture falling apart. Season with salt and black pepper.
Heat about 1-inch of oil in a frying pan over medium heat. Drop spoonfuls of the potato mixture into the hot oil, flattening the fritters slightly with the back of a spoon. Fry the fritters until golden-brown on both sides, about 2 to 3 minutes per side.
Remove and drain on paper towels and serve hot. If not, keep the fritters warm in a 100 degrees Celsius oven.
NOTES
- To freeze the fritters, place the fritters on a tray in a single layer and freeze for 1 hour. Transfer the fritters into an air-tight bag and keep frozen. To reheat the fritters, wrap the fritters in an aluminium foil and heat up for 15 to 20 minutes in a 175 degrees Celsius oven. - Adapted from Carrie's Experimental Kitchen