My recipe is half fat - I use butter usually, to flour-plain, pinch of salt, I beaten egg plus a 2nd yolk of needed.
Food processor, flour salt, cubed butter, pulse it until like breadcrumbs,but doesn’t need to be too fine, then add the beaten egg & pulse it until it just & only just comes together, if it doesn’t look like it will,add the 2nd egg yolk & pulse again, if it doesn’t come together then add 2nd egg white, can add icing sugar to flour if sweet pastry wanted ala Raymond Blanc. As soon as it comes together stop, tip onto the work top & very lightly bring it together with cold hands. Wrap in cling film & chill in the fridge for at least 30 minutes but no more than an hour otherwise you’ll need for it to warm up again to roll out.