I saw this movie in the 1980s or 90s. It was set in the Pacific Northwest
Female chef opens restaurant/inn and for opening night is having a large dinner for a number of people including food critics. Lots of work has gone into the meal , especially the salmon. Local policeman is there too.
One food critic in particular is a pompous twit and demands most succulent morsel (salmon cheek) and promptly dies of poisoning. Chef is main suspect since she cooked the food.
Everyone is trapped in the restaurant/inn (by weather I think) while the chef and the policeman solve the crime.