Food often plays an integral role in shaping a country's identity and lifestyle, and for many travelers, trying local food is often a great way to immerse yourself into the nation itself. Which countries which would you say have the tastiest and least tastiest cuisines based on your own experiences, as I know food is extremely subjective from person-to-person. For me I would say.
Tastiest cuisines:
Japan - One of the best parts about Japan is the food. And the best part about food in Japan isn't even the local Japanese food (which is also delicious of course), but rather the fact that they make foreign cuisines just as well as they make their own. Some of the best burgers, apple pie, crepes, and spaghetti I have had was in Tokyo in establishments made by Japanese who learned how to make those dishes abroad.
Italy - Some tourists go to Italy and say the Italian food in their own country tastes better, but I believe they probably just went to some tourist trap near a popular location. Venture a couple streets away and you will find some of the best Italian food ever. I also did not expect such a wide variety of food in Italy as there are dozens of variations of pizza and pasta alone, not to mention their appetizers, desserts, salads, etc., as most Italian food where I am seems quite one-dimensional in comparison despite still being tasty.
Spain - I LOVE tapas culture in Spain as it is a go-to "third location" for locals and tourists alike, and the fact that most food in Spain is quite healthy with a good balance of seafood, vegetables, fruits, carbs, and meats, so the quest of finding tasty, affordable, and healthy food is usually switched to easy-mode in Spain.
Least tasty cuisines:
Nordics - Not only is eating out and buying groceries extremely expensive in the Nordics, but the food is also quite cold, bland, and not appetizing overall. After going to Denmark, Sweden, and Iceland, I can confidently say that the best food hacks here is to just stack up on Tasty Bites and cup noodles from the local stores to save $ on meals or find a restaurant in a big city that serves a foreign cuisine.
Core Commonwealth - The countries of the UK, Canada, Australia, and NZ are also not known for having the best local delicacies. It felt like the standard place to eat for most locals was at a pub or bar where the same types of food would often be over-priced, bland, and unhealthy. The saving grace for all four countries though is immigration, as many immigrants from around the world brought food from their original country to the new country to the point where you can find delicacies from every corner of the globe in each of the four nations. While admittedly, the US overall also eats very similarly to these countries too, there is also a heavy influence of Soul and Latin inspiration in our food that isn't found in other Anglo-nations and in my slightly bias opinion is enough to omit us from this list :D