With the party season fast approaching, Nigella found a happy medium between fiddly canapés and the 'open a few packets of crisps' approach. Potato cakes with smoked salmon and dill were effortlessly elegant, while little wraps filled with tuna or crab were sure to have guests hovering around the food table. White chocolate and mint mousse, served in shot glasses, provided a kick of something sweet to round off the evening.