Something I like to do as I travel around Asia is check out the local convenience stores. They are usually filled with what I as a Brit would call odd things. I think you can get a good idea of the local tastes and likes, as well as maybe trying a new thing or 2. 7/11 usually reigns as king.
Weird snacks in Bali Convenience stores in Bali
Now Taiwan had the weirdest and most interesting mix I’ve seen, possibly due to the Japanese, Chinese and western influences on the culture