250g plain flour
125g cold butter, cubed
pinch of salt
1 egg, beaten
1 tbsp cold water
(75g icing sugar, if making sweet pastry)
Sift flour and salt into bowl of food processor and add cold cubed butter
(and sugar, if making a sweet pastry).
Pulse the mixture together until it resembles fine
breadcrumbs.
Add half the egg yolk and water mix, then pulse it until
the dough begins to come together. Add more egg a tablespoon at a time if
required. Be careful not to make the dough too wet.
Tip onto a work surface, use your hands to gently press
the dough into a disc. Wrap with clingfilm and rest for at least 30
minutes.