How to make
Wash the fruits well and strain them. Add the sugar and starch and stir carefully. Put them in an oiled tray.
Mix the flour with the ground hazelnuts. Add the butter that's been cut into pieces and knead until it turns to crumbs.
Add the sugar and stir well. Sprinkle the fruits with these crumbs and press on them to even them out.
Bake for 25 min. in a preheated 390°F (200 °C) oven. Reduce the temperature to 370°F (190 °C) and bake the cake for another 15 min. Serve warm.