Combine the flour, oil and salt in a food processor.
With the machine running, slowly add the water until the mixture comes together (It will look grainy rather than suddenly balling like pastry). Stop the machine and check if the dough will form a ball. If not, more water is needed.
Form the dough into a flat round, wrap and chill for 30 mins.
Heat an oven to 220˚C.
Once the dough is rested and chilled, roll it out on a floured surface to about 2mm thick. Alternatively, run it through a pasta machine to the second setting for a really even finish.
On a floured surface, prick the dough all over with a fork or a dough docker. Use a cookie cutter to cut the dough into biscuits the size you like.
Carefully transfer the biscuits to a baking tray lined with floured baking paper or a silicone lining. Bake in the oven for 10–15 mins until just turning golden. Cool on a wire rack.
