Figgy Pudding Disaster by London Lovett

Take a trip back two hundred years to Firefly Junction 1815, when Edward Beckett was young and alive and desperately in love with Kathy "Kat" Garfield...
It's mid-December in Firefly Junction, and there's a lot of buzz around the local figgy pudding contest. When the winner winds up face down in her winning pudding, the local constable arrests her husband. But Kat is convinced he has the wrong person. Edward, looking for any excuse to be with Kat, volunteers his services to help her find the real killer. They soon discover that their quaint little town has numerous secrets, and they all seem to connect to the victim. And while Edward is enjoying his long, investigative days at Kat's side, he also knows it won't be long before she leaves him for good, and his heart will be forever broken.
Book 18 of the Firefly Junction Cozy Mystery series