Double line a 900g/2lb loaf tin with cling film. For the ganache, melt the chocolate and butter in a large heatproof bowl over a saucepan of simmering water (do not allow the bottom of the bowl to ...
Dip each mandarin segment into the ganache, then dust with the hazelnut praline power (optional). Lay each segment on a baking paper lined tray to dry.