With just three ingredients, this easy brandy butter is a classic british accompaniment for mince pies and christmas pudding. Butter is whipped with confectioners' sugar and brandy for a rich, sweet, lightly boozy spread. It's similar to american frosting but less sweet and spiked with brandy. Use a high-quality butter for this mixture for the best results. You can adjust the amount of sugar and brandy to suit your tastes. The brandy butter can be made up to a few days in advance and stored in the fridge. Let it warm up a bit on the counter before serving.