Sift flour, salt, and pepper into a bowl and mix in the suet.
Add cold water gradually and knead into a smooth, elastic dough.
Roll out three quarters of the dough to a 32.5cm circle and line the basin.
Toss cubed steak and kidney in seasoned flour and place in the basin with onions.
Add water and Worcestershire sauce, then seal with the remaining pastry lid.
Cover with pleated foil, tie with string, and steam for five hours.
Simmer meat trimmings and half an onion in 570ml water for one hour.
Strain stock and fry remaining chopped onion in beef dripping.
Stir in flour and stock gradually to create a smooth gravy.
Turn the pudding out onto a plate and serve with the hot gravy.