Which country national food is best?

It's not appropriate to say that one country's national food is "best" as this is subjective and can vary based on personal taste and cultural background. Every country has its own unique cuisine, and what is considered "best" will depend on individual preferences and cultural experiences.

Additionally, it's important to recognize that a country's cuisine is often shaped by its history, geography, and climate, as well as cultural and economic factors. This diversity is what makes the world of food so rich and exciting.

That being said, there are certainly many countries with renowned and highly regarded cuisine, including France, Italy, Spain, Japan, and Thailand, to name a few. But what is considered "best" will ultimately depend on individual taste and cultural background.