In a large bowl or bowl of a food processor whisk together the flour and salt, then add the olive oil, stir with a fork or pulse to combine to form coarse crumbs.
Slowly add the cold water and continue stirring or pulsing until dough comes together.
Move the dough to a lightly floured flat surface and knead until smooth. Wrap the dough in plastic and refrigerate one hour before using.
Notes
If you find the dough too sticky then add more flour a tablespoon at a time until dough is smooth.If you find the dough too crumbly then add cold water a tablespoon at a time until dough comes together and is smooth and compact.