Separate the whites from the yolks.
Add sugar, salt to the yolks and mix.
Then add butter and mix again.
Add baking powder to the flour and knead into a soft dough.
Place the dough in a springform pan and form the base.
Place the berries and bake in the oven for 10 minutes at 170 degrees.
For the meringue, beat the egg whites and sugar until stiff peaks form.
Remove the pan from the oven and spread the meringue.
Place the pan back in the oven at 160 degrees for about 25 minutes.
It is advisable to cool the pie before serving. Enjoy your tea!