Ingredients
Sponge
175 g/ 6 oz of dark chocolate
150 g/ 5½ oz of unsalted butter
150 g/ 5½ oz of caster (superfine) sugar
6 eggs, separated
150 g / 5½ oz/ 1¼ cups of plain (all-purpose) flour
Icing and Filling
175 g/ 6 oz of dark chocolate
5 tbsp of strong black coffee
175 g/ 6 oz/ 1 cup of icing (Confectioners) sugar
6 tbsp good apricot preserve
50 g/ 1¾ oz of dark chocolate, melted
Preparation
- Grease a 23 cm/9 inch spring form cake tin (pan) and line the base. Melt the chocolate.
- Beat the butter and 75 g/ 2¾ oz of the sugar until pale and fluffy.
- Add the egg yolks and beat well.
- Add the chocolate in a thin stream, beating well.
- Sieve (strain) the flour; fold it into the mixture.
- Whisk the egg whites until they stand in soft peaks.
- Add the remaining sugar and whisk for 2 minutes by hand, or 45-60 seconds if using an electric whisk, until glossy.
- Fold half into the chocolate mixture, then fold in the remainder.
- Spoon into the Ld prepared tin (pan) and level the top.
- Bake in a preheated oven, 150°C/ 300°F/ Gas Mark 2, for 1-1¼ hours until a skewer inserted into the centre comes out clean.
- Cool in the tin (pan) for 5 minutes, then transfer to a wire rack to cool completely.
- To make the icing, melt the chocolate and beat in the coffee until smooth.
- Sieve (strain) the icing (confectioners') sugar into a bowl.
- Whisk in the melted chocolate mixture to give a thick icing. Halve the cake.
- Warm the jam, spread over one half of the cake and sandwich together.
- Invert the cake on a wire rack. Spoon the icing over the cake and spread to coat the top and sides.
- Leave to set for 5 minutes, allowing any excess icing to drop through the rack.
- Transfer to a serving plate and leave to set for at least 2 hours.
- To decorate, spoon the melted chocolate into a small piping bag and pipe the word 'Sather' or `Sachertorte' on the top of the cake.
- Leave it to harden before serving the cake.
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