The original post says use self raising flour. I have never used SR flour, always use plain when making yorkies. 3 eggs, 6 fl oz milk, 4 fl oz water, 6 oz plain flour, pinch of salt.
A knob of beef dripping in each portion of a 6 portion muffin tray, heat until smoking and add liquid bake on high temp for 10 mins then reduce to about 170 for 15 mins.