The Signature Dish of the Underworld by Gwyneth Lesley

Every century the Asphodel Meadows hosts the Hades cook-off. Rae has lost it four times to the great libation daemon, Garth. Four. Well, not this year.
When Garth comes knocking with a job opportunity to join his kitchen staff, Rae has the chance to finally be part of a team. But is Garth doing this to knock her off her game because she finally stands a chance at winning, or because he genuinely believes in her talent and wants her assistance?
Both chefs have more than just their reputations at stake and there can only be one winner.