Put the flour and some seasoning into a large bowl, stir in the eggs, one at a time, then slowly whisk in the milk until you have a smooth batter. Chill in the fridge for at least 30 mins or up to a day.
Heat oven to 220C/180C fan/gas 7. Pour the oil into the holes of a 12-hole muffin tin, then heat the tin in the oven for 5 mins. Carefully ladle the batter mix into the tin, then bake for 30 mins until well browned and risen.