Method
Sieve the flour into a large mixing bowl. Grate the butter and lard into the flour. Occasionally coating the grated fat with the flour to stop it sticking into a lump.
Rub the butter and lard into the flour, until it resembles bread crumbs. Finely grate the orange zest and stir into the flour. Squeeze the orange.
You need in total 8 dessert spoons of fluid. Measure in the orange juice and make up the rest with water.
With a fork stir the liquid into the flour mixture. Using your hands bring the mixture together and knead very lightly until a ball is formed.
Rest the pastry in the fridge for 30 minutes.
