Folk, Working Class
な adjective
しょみんてき
ここの饂飩はこの庶民的な味がいいんだよ。
The humble taste of the udon here is good.
Remember how 庶民 means "common people?" Well when all the common people like something it becomes popular!
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.