Step by Step
Place the flour in a bowl, add the egg and one-third of the milk. Season with salt and pepper and whisk together. Gradually whisk in remaining milk to make a smooth batter. Stir in the tuna and sweetcorn.
Heat the oil in a large frying pan. Add a dessertspoonful of the mixture and cook for 2-3 minutes until golden and set. Turn and cook for a further 2-3 minutes. Remove from the pan and keep warm. Repeat with the remaining mixture. Serve hot with broccoli and tomato ketchup for dipping.