Jackfish Lodge: Saskatoon Turnover Pie

Yield:	8 Servings
Categories:	Pastries, Desserts, Fruits

4	c	Saskatoon berries
1	ts	Lemon rind, grated
2	tb	Lemon juice
3/4	c	Granulated sugar
1/4	c	Cornstarch
1		Pastry for 9-inch double crust pie
1		Egg yolk