I think this anime is made for a very specific target audience: Japanese people that are at least over age 20, who
may have some nostalgic feelings towards some Japanese candy they had in their childhood.
Even for a weeb like me that thouroughly enjoys Japanese candy and tries to get his hands on any weird pack
of Pocky or Haichuu I can get my hands on, this wasn't really a very enjoyable watch... (And I'm a sucker
for Ayana Taketatsu on top of that, too).
There's really not a lot of plot, and most comedy revolves about the "AHHH, I REMEMBER THAT SPECIFIC SWEET" moments.
For most of the candies being shown there is some explanation and backstory, but I can't help but feel I was missing out on something. Some old playground games are also being explained, but again, this is only really fun if you did that stuff when you were a kid. Nostalgy seems to be the keyword.
I guess you can kind of compare it to Shokugeki no Souma, though the comedic value in that show was way higher,
even not knowing anything about dishes or cooking.