Light Pike Dumplings with Lobster Sauce

Name: Light Pike Dumplings with Lobster Sauce (Quenelles de brochet mousseline au coulis de homard)
Yield: For four people
Cuisine: French
Ingredients: 300 g (10½ oz) pike, skinned and boned; 2 egg whites; 1 lobster, weighing 500-600 g (1 lb 2 oz-1 lb 5 oz); 20 g (¾ oz) butter; 1 carrot, sliced; 1 shallot, chopped; a sprig of thyme; half a bay leaf; a dash of brandy; 1 litre (1¾ pints) double cream or crème fraîche; 1 litre (1¾ pints) double cream or crème fraîche; salt, freshly ground pepper, nutmeg; salt, freshly ground pepper, nutmeg; salt, freshly ground pepper, nutmeg