Nesselrode Chiffon Pie

Count Karl Robert Nesselrode (1780-1862) was a Russian diplomat famous for having negotiated the Treaty of Paris after the Crimean War. I’m not sure what his connection with chestnuts was, but in classical French cooking, anything with his name on it involves chestnut purée. This decidedly American recipe is innocent of chestnuts, but otherwise seems to be based on a French dessert called pouding Nesselrode or Nesselrode pudding, which includes, besides the purée, ca