Prep Pastry Dough
Cut up the butter and lard and put into a food processor with the flour.
Blitz for a few seconds until it resembles breadcrumbs then add the salt and a few drops of water. Blitz again until a dough forms, keep adding a few drops of water until it comes together.
Mould the dough into one ball, wrap in clingfilm and chill in the fridge for half an hour. (N.B. The pastry can be made by hand by rubbing the fat into the flour lightly with your fingertips, then bringing together with a table knife and water until you have a smooth dough.)