Cardinal [Coffee Cream] Slices for Thermomix

Preparation

1. Preheat the oven to 320 °F (conventional oven).
2. For the meringue: whisk the egg whites and sugar until stiff. Pour into a piping bag with a large, round nozzle.
3. For the sponge: separate the eggs. Whisk the egg whites at 37 °C for 10 minutes/speed 3 (without measuring cup). Add the salt. Add the sugar gradually and whisk until stiff. Fold in the egg yolks and continue to whisk for 10 minutes. Add the rum-water mixture and switch to speed 1. Mix the flour with the baking powder and fold into the egg mixture by the spoonful. Pour into a piping bag with a large, round nozzle.
4. Cut two strips of baking paper (15 x 40 cm), and place on a baking tray. On each piece of baking paper squeeze out 3 lines of meringue leaving a gap between the lines. Pipe the sponge mixture into the gaps.
5. Bake in a preheated oven for 15-20 minutes. Turn off the oven and let the meringue-sponge base dry with the fan running. Allow to cool, then turn upside down on a platter and remove the baking paper.
6. For the coffee cream: whisk the unchilled QimiQ Classic Vanilla in the Thermomix bowl with the butterfly whisk until smooth. Add the sugar, rum and instant coffee powder and continue to whisk until smooth. Whip the cream and fold in carefully.
7. Lay one of the meringue and sponge bases into a suitable baking frame. Fill with the cream and top with the second base. Chill for approx. 4 hours.