Melt the butter in a pan and lightly fry the shallots and peppercorns over a medium heat for 5 mins, until the shallots have softened (and before they brown).
Add the brandy and cook until it has reduced.
Pour the wine into the mix, turn up the heat and boil rapidly until reduced by half.
Add the stock and reduce again, this time by two-thirds, this will take around 5 mins.
Stir the cream into the sauce and allow it to thicken slightly. Season to taste and serve alongside a beautiful steak.