2.In a saucepan, cook combined berries, sugar, lemon juice and vanilla, stirring, for 4-5 minutes. Remove berries from liquid and set aside. Cook juices for 10 minutes on low until reduced by half. Return berries to pan, then set aside.
3.Sift flour and baking powder into a bowl. Rub in butter, stir in extra sugar and buttermilk, mixing to form a dough. Roll out on a floured surface to 2cm thick. Cut eight 9cm rounds.
4.Arrange pears and berries over custard, then top with dough rounds. Brush with extra buttermilk and bake for 25-30 minutes until golden. Serve with custard.