Beat butter, sugar and ginger in a bowl until pale and creamy. Add the eggs one-at-a-time, beating until well combined. Fold in flour, cocoa powder and milk.
Spoon the mixture into six 8 oz oven-safe pudding molds or ramekins, and smooth the tops. Bake in preheated oven for 35 min, or until a toothpick into the center comes out clean.
* Set aside for 10 min to cool. Run a thin-bladed knife around the inner edge of each mold, then turn upside down onto serving plates.
Sauce:
Combine chocolate, cream and sugar in a saucepan over medium heat. Cook, stirring slowly, for 5 min or until the mixture is smooth and slightly thickened.