Good spirit! 👍✨
I am curious to know how 羊羹・ようかん (Youkan) tastes like to you. Most people from the West don't like it. But it's
Black one is traditional, but they also have various flavors like green-tea and cherry-blossom.
If you want to play safe, try 金平糖・こんぺいとう (Kompeito). It's just colored chunks of sugar. It can be a handy souvenir of Japan because of its pretty looks. 
It’s good. I like it. Need to buy some.
If you don’t care too much about quality, you can easily buy them at supermarkets or convenience stores. They are still good.
If you prefer high-quality ones from established brands, I recommend visiting department stores. Additionally, when you are in cities like Kyoto or Osaka, you can easily find the main stores of established confectionery brands with histories of hundreds of years.
