Blackberry Roly Poly

Ingredients:

1 pint of blackberries

½ teaspoon (scant) of salt
¼ cup of water
¼ cup of shortening
¾ cup of sugar
Yolk of 1 egg
1½ cups of pastry flour
Milk or water
3 level teaspoons of baking powder
White of 1 egg, beaten slightly
Granulated sugar

Directions:
1. Cook the berries with the water in a covered saucepan until softened and stain through a sieve fine enough to keep back the seeds; add the sugar and let cook until quite thick, stirring occasionally.
2. Sift together the flour, baking powder and salt, work in the shortening and mix to a dough with the yolk of egg and a little milk or water.
3. Turn the dough onto a floured board and knead, to get it in shape, then roll out into a rectangular sheet one-fourth an inch thick; cut this into four pieces longer than wide.
4. Spread each piece with the blackberry mixture, roll up like a jelly roll and set into a baking pan.
5. Brush the top of each roll with white of egg, then dredge with sugar.
6. Bake about twenty-five minutes.
7. Serve hot with the rest of the blackberry, kept hot in boiling water, as a sauce.