Three-hundred sixty-four days a year, my mother suffers from make-it-from-scratch syndrome. On her one day a year liberated from this affliction, she spends a few hours preparing a Greek New Year’s cake (vasilopita), pulling from the pantry a box of Duncan Hines yellow cake mix and a box of instant vanilla pudding. She combines these two powders in a bowl, adds a considerable amount of rum – the secret, she says, to the cake’s moist texture – and before long has produced a beautiful rum bundt cake, the dessert of choice for our annual coin-hiding, cake-cutting, Greek ritual.