Method : 

• Beat the eggs in a mixing jug with a fork or a whisk.
• Add the flour and mix with a fork to form a thick paste.
• Mix in 1 teaspoon of the Olive Oil.
• Add the milk and beat vigorously to form bubbles. The more milk you add the lighter the Yorkshire puddings will be.
• Let this mixture rest in the fridge for at least 1 hour. 
• Using a Yorkshire Pudding tin (4's or 8's). Put 1 teaspoon of olive oil into each pudding mould.
• Heat the oil in a preheated oven @ 180 c for about 10 minutes so that the oil is hot but not smoking.
• Remove the oil from the oven and quickly fill each mould with approx. 1 Serving Spoon (60 ml) of Batter Mix.
• Put the tins back in the oven and turn the temperature up to 200 c. 
• Bake for approx. 20 minutes , so that the puddings are well risen and a golden brown colour. 

You should get an Island of oil form in the middle of each tin when you pour the batter mix in ....