Step 1

Preheat the oven to 200C/180C Fan/Gas 6.

Step 2

Mix the flour and salt together in a large bowl. Add the sunflower oil to the bowl and rub into the flour using your fingertips, until the mixture resembles rough breadcrumbs.

Step 3

Add 3 tablespoons of cold water and mix with a spoon until the dough comes together to form a ball.

Step 4

Very lightly dust a work surface with flour. Dust a rolling pin with a little more flour, then roll out the dough until it forms a circle, roughly 20cm/8in in diameter.

Step 5

Use the pastry to line a 18cm/7in loose-bottomed sandwich cake tin. Trim the excess pastry with a knife and use to patch up any gaps.

Step 6

Line the case with crumpled baking paper and half-fill with baking beans. Bake for 15 minutes, then remove the paper and beans and bake for a further 5 minutes, or until the pastry is crisp and lightly browned.