Put the ingredients in the specified order into a large bowl or other container with lid that can be sealed.
Close the lid then shake hard from side to side 5 or 6 times, then up and down 5 or 6 6 times. That's it; it's ready! (You can also mix this in your food processor or with a beater, but it's less fun!).
Use your fingers to pat the pastry into a pie plate or pizza pan. Add the rest of your ingredients and bake.
NOTE: For a sweet pastry, replace the oil with melted butter and add 50 grams of sugar to the flour.