Adapted from: Gourmet via Epicurious Notes: The original recipe calls for making a chocolate ganache, which sounds heavenly, but I have always adored my grandmother’s chocolate glaze recipe — it’s called black velvet icing and it contains eggs, which is odd, but it’s so good — so that is the one I use. If you want to use Gourmet’s chocolate ganache, find it here. Some commenters have found the amount not to be enough for a full cake, so I've updated the quantities below to be a double…
