Jacob Lahne, an assistant professor at Drexel University in the US, found that a categorical mismatch of cuisine could result in an overall more enjoyable meal.
Lahne tested and analysed subjects' hedonic (liking) responses to a main dish of "pasta aglio e olio" (pasta with garlic and oil) after they had either an appetiser of Italian minestrone or Thai tom kha soup.
In one case the appetiser matched the cuisine type of the main dish and in the second was a clearly different cuisine.
The research found that subjects liked the main dish and the overall meal more when they had a mediocre Italian soup to start.
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Conversely, they enjoyed the main dish and meal less when they started with the good Italian soup. This effect did not occur when subjects started with the Thai soup - liking for the pasta dish did not change with the Thai soup quality.
However, by actively varying dishes by cuisine type, a negative response to the overall meal could improve, or be avoided altogether.
The study was published in the journal Food Quality and Preference.