Its dead easy, make a good batter mix, put the baking tray, greased with good quality lard , I use the Polish Schmaltz type of pure dripping , into the top of your oven 425degrees F Gas mark7 until smoking hot, then strain the batter into the baking tray and bake for 35-40 mins, funny enough I put a tray in about 30 mins ago to go with the pot- roasted brisket I am doing for lunch
My method seems to have had 100% success rate
Equal quantities of egg flour milk i.e. cup full, pinch salt & pepper. Take flour pour in bowl, add eggs 1 at a time and whisk, then add milk gradually to avoid lumps. Add salt & pepper. Leave to stand for 30mins.
220'C oven get fat/oil in tray and put in oven without batter and heat up until it just starts to smoke.
Batter should sizzle when you pour it in. Chuck in oven and watch as the huggest yorkie puds grow uncontrolably!