I have been on a bit of a mystery reading trned lately and I have noticed certain side focus on food in many of my favorite authors.
Foremost amongst those is Rex Stout, his Nero Wolfe series has as its focus a gourmand who employs a trained chef as his butler. The dishes mentioned in the series have been put together in a Nero Wolfe's Cookbook, a copy of which I have not yet been able to procure. But it doesn't stop there.
Andrea Camilleri in his Inspector Montalbano series has a parallel theme of Montalbano employing Adelina, his house cleaner, who leaves succulent sounding Sicilian dishes in his refrigerator, as well as tempt us with the daily fare from his favorite local, while his boss, the comissario's wife occasionally would create some kind of recipe that he would swoon over. All in all a very Chowhoundish experience, along with murder, mayhem, and the Sicilian experience.
Both Ian Rankin and Peter Robinson like to describe their creations, John Rebus and Alan Banks, "tucking" into pub fares and Scottish and Yorkshire recipes.
Diane Mott Davidson has her Goldy the Caterer series where Goldy solves murders in between catering gigs.
So are there any others?