This is a tribute to Marie Moverley of Wakefield, who cooked the best Yorkshires ever. Although I never asked her for the recipe, this is the closest I can get to her truly mouthwatering Yorkshires.
I think the secret to this is to add equal quantities of flour and milk to the volume of egg, and to have very high temperatures for cooking, but works for me every time - unless this is Marie's guidance!