First of all, food is a subjective concept, so everyone's evaluation and preference for food may be different. For example, some people may think that the special food of a city is very delicious, while others think that the food there is mediocre. Therefore, the evaluation of a city's food level needs to comprehensively consider various viewpoints and evaluation criteria.

Secondly, even if a city's food culture is relatively lacking or lacking in popularity, some local foods worth tasting can still be found. For example, some ethnic minority local specialties or traditional home cooking, although not so famous, may bring unexpected surprises.

Finally, each city has its own unique food culture and historical background. Some cities may not have many famous restaurants or food brands, but they are rich in local food and unique food culture. For example, some remote areas or small towns may not have large chain restaurants, but they have unique local cuisine and traditional food culture.

Therefore, many factors need to be considered to evaluate the food level of a city. Different cities may have different food characteristics and advantages, so it is not easy to decide which city is a food desert.