In a large mixing bowl or jug, add the plain flour, cornflour and salt. Give it a good whisk to combine. Add the eggs and the milk, and whisk until you have a smooth batter.
For best results, chill the batter for at least 30 minutes or up to overnight. If you haven't mixed the batter in a jug, then transfer it to a jug ready for pouring into the tin later on.
When ready to bake, preheat oven to 220°C / 200°C Fan / 425°F / Gas Mark 7. Pour a teaspoon of oil into each hole of the bun tin, and once the oven is hot enough, place the tin in the oven for 5-7 minutes until the oil is piping hot.
Give the batter another good whisk before carefully pouring the batter equally between the holes in the tin. Return to the oven quickly and bake for 20-25 minutes or until well risen and nicely golden in colour. Serve and enjoy.
Recipe tips
Yorkshire puddings freeze perfectly when cooked and are really easy to reheat. Just pop into an oven heated to 200C/180C Fan/Gas 6 for 3 minutes or until piping hot.
