Preheat the oven to 450°F Pour the vegetable oil into the holes of a 12-cup muffin tin and place into the oven for 10 minutes so that the oil gets nice and hot.
In a jug, mix the eggs, milk and salt until smooth. Add in the flour and use a whisk to stir until smooth (you can also just blend everything together in a blender to make a smooth batter if you prefer).
Quickly pull the muffin tin from the oven and pour the batter in equally among the cups. Return to the oven and bake for 20-25 minutes until super puffed and golden.