餅は餅屋

もちはもちや, モチはモチやmochihamochiya

expression

  1. every man knows his own business best
  2. one should go to specialists for the best results
  3. for rice cakes, (go to) the rice cake shop

Kanji in this word

Study it in Yanamino

Data from JMdict, KANJIDIC2 (EDRDG), KanjiVG, CC-CEDICT and Make Me a Hanzi. Sources and licences