You can make this dough either by hand or with a food processor.
In a medium bowl or in the food processor container whisk together the flour, brown sugar, salt and baking powder. Either cut in butter or pulse until mixture resembles coarse crumbs.
In a medium bowl beat together the egg, cold water and vinegar. Add to flour mixture and mix until almost combined. Transfer to a flat surface and gently knead into a ball. Wrap in plastic and chill for approximately 30-60 minutes before using. Enjoy!
