Melt 150 g sugar in a pan and let it caramelize lightly. Add almonds, mix carefully with the caramel and place on aluminium foil coated with oil. Smooth and let it cool down.
In the meantime, stir the fat with 300 g sugar and orange fruit until frothy. Separate 3 eggs. Gradually add the remaining eggs and egg yolks to the fat-egg mixture. Coarsely chop the brittle and chocolate. Mix flour with starch and baking powder.
Beat the egg white until stiff, add the remaining sugar and stir into the fat-sugar-egg mixture. Fold in flour-starch mixture, brittle and chocolate. Pour the mixture into a greased, flour-dusted ring cake mould (approx. 2.5 litres capacity) and bake in a preheated oven (electric range: 175 °C/ gas: level 2) for approx. 1 hour.
Take out and let cool on a cake rack. After about 15 minutes turn out and let it cool down completely. Dust with icing sugar. Makes about 16 pieces.