In a large bowl whisk together the eggs and sugar until light and fluffy.
Melt 300g of chocolate with 200g of butter then fold in the chocolate chips, almond meal and flour.
Fold the eggs and sugar into the chocolate and flour mixture, then pour the whole mix into your cake tin and bake at 180c for 1 hour.
Remove from the oven and allow to cool on a cake rack.
Melt together the remaining amounts of the chocolate and butter. Mix well and allow to cool. Pour the ganache over the cooled mud cake.
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