In a medium-sized mixing bowl, combine the all-purpose flour and salt thoroughly. Add the shortening and use a pastry blender to cut it into the dry mixture until the consistency resembles small peas. Gradually incorporate the cold water, adding one tablespoon at a time and mixing gently with a fork. Continue until the dough becomes evenly moistened, being cautious not to overwork it to avoid a tough texture. Gather the dough into a ball and roll it out on a surface dusted with flour, rotating and flouring as needed, until the desired size is reached.