In a large bowl, whip the pata kūteretere (softened butter), puehu huka (icing sugar), tote (salt), wanira (vanilla) and kiri rēmana (lemon zest). Do this for 5 minutes on high until the mixture is pale in colour and fluffy.
Add the puehu kānga (cornflour) and plain flour (puehu parāoa noa) to the butter mixture and rub it together with your hands until a dough forms. Don't knead it too much, just do it until it comes together.
Place the dough in-between two large pieces of rautunu (baking paper). Roll it out until dough is approximately 0.5cm thick.
Line two large trays with baking paper (I re-use the baking paper I use for rolling out the dough).
Use a 5-7 cm cutter to cut out the pihikete (biscuits), leave a 2cm gap between each one. Remove the excess dough, roll it out again and continue to roll and cut out the dough until it is all used. Eating some is also an option!
Chill the trays of pihikete (biscuits) in the fridge for ten minutes before baking, this helps them keep their shape.
Pre-heat the oven to 160 °C.
Bake the trays of cookies, one tray at a time for 10 minutes until slightly golden. Allow to cool.