Family Tested & Approved
In a small bowl, whisk together the vinegar, egg and water until well combined. Set aside.
In a second bowl combine the flour and sugar, cutting in the shortening until crumbly and about the size of peas.
Combine all ingredients until just incorporated (too much mixing will make the crust tough!). Form into a ball, wrap in tin foil and place in the fridge for 1/2 hour, then roll out.