Preheat the oven to 180°C/160°C fan/350°F/gas 4 and grease and line a 20cm round springform cake tin. Put the olive oil, kefir, eggs, honey and sugar in a bowl and mix to combine.
This moist and airy cake fragrant with orange notes is draped in a luscious, silky chocolate sauce for a treat that’s perfect for any time of day. Ruth Reichl started musing about food ...