For the Cider And 5-Spice Bundt Cake does the dry cider refer to an alcoholic cider beer or apple cider vinegar?
Nigella's Cider And 5-Spice Bundt Cake (from SIMPLY NIGELLA) is a warmly spiced cake that is lighter than a traditional sticky gingerbread cake. The cake batter is made by the melt and stir method and contains cider, preferably a dry cider.
Cider in the UK is an alcoholic beverage that is lightly sparkling and so it could be considered a "cider beer". In the US it would be called hard cider. It is not apple cider vinegar and it is not unfiltered apple juice.