Lard or Dripping in the tin for 10 mins AT LEAST, the fat should smoke. Use a metal tin.
OK, believe me this works, you are not going to measure anything.
Get a large jug, break one or two eds into it and beat with a whisk.
Start adding plain flour a spoonful at a time and beating. Once it looks like double cream you are there.
If you have time leave it to 'rest' for 10 mins to 24 hours.
OK open the oven, your tin should be on the top with smoking fat, pull out the tray and quickly pour in your mixture - it should bubble at the edges a little. This is why you beat the mixture in a jug.
Put the tin back and close the oven. Wait 15 mins.
You should have a decent YP.