here's the recipe, from Stanley Holloway; I have to split it in two.
The real Yorkshire Pudding is a poem in batter. To make one's an art, not a trade.
Listen to me and I'll tell thee how t'first Yorkshire pudding was made.
A young angel on leave from Heaven came flying over Ilkla Moor, and the angel, poor thing, got cramp in her wing and came down at an old woman's door.
The ole woman smiled and said "Eee it's an angel! Well I am surprised to see thee. I've not seen an angel before, but th'art welcome, I'll make us a nice cuppa tea."
The angel said "Eee thank you kindly, I will."
Well they had two or three cups of tea, three or four Sally Lunns, and a couple of buns. Angels eat very lightly you see. Then the old woman looked at the clock and said "By Gum, he's due home from t'mill is my Dan. You get on with your tea, but you must excuse me, I must make a pudding for t'old man."
Then the angel jumped up and said "Give me a bowl, flour and water and eggs, salt and all. And I'll show thee how we make puddings in Heaven for our Thomas and Peter and Paul."