Instructions

1. 1
   Heat the water and sugar together until fully dissolved.
2. 2
   Melt butter in a large saucepan over a low heat.
3. 3
   Add the chopped chocolate to the melted butter, and whisk until smooth.
4. 4
   Whisk in the sugar syrup and allow to cool slightly.
5. 5
   Add the eggs and whisk until well blended.
6. 6
   Pour the mixture into a greased and parchment-lined 9-inch (23 cm)springform pan.
7. 7
   Wrap the bottom and sides of the springform in aluminum foil so that no water can seep to the cake while it is cooking in the water bath.
8. 8
   Cook in a bain-marie at 350°F (180°C) in an oven for 25–30 minutes.