The Apothecary Diaries: Maomao's Notes from the Inner Palace

Kusuriya no Hitorigoto: Maomao no Koukyuu Nazotoki Techou
薬屋のひとりごと 猫猫の後宮謎解き手帳
ko
약사의 혼잣말(마오마오의 후궁 수수께끼 풀이수첩) (official)

Adaptation

novel
2014
Publishers:
and 2 more
In the East is a land ruled by an emperor, whose consorts and serving women live in a sprawling complex known as the hougong, the rear palace. Maomao, an unassuming girl raised in an unassuming town by her apothecary father, never imagined the rear palace would have anything to do with her—until she was kidnapped and sold into service there. Though she looks ordinary, Maomao has a quick wit, a sharp mind, and an extensive knowledge of medicine. That's her secret, until she encounters a resident of the palace at least as perceptive as she is: the head eunuch, Jinshi. He sees through Maomao's façade and makes her a lady-in-waiting to none other than the Emperor's favorite consort... so she can taste the lady's food for poison! (Source: J-Novel Club)

Alternative

manga
2017
Publishers:
and 1 more
Maomao, a young woman trained in the art of herbal medicine, is forced to work as a lowly servant in the inner palace. Though she yearns for life outside its perfumed halls, she isn’t long for a life of drudgery! Using her wits to break a “curse” afflicting the imperial heirs, Maomao attracts the attentions of the handsome eunuch Jinshi and is promoted to attendant food taster. But Jinshi has other plans for the erstwhile apothecary, and soon Maomao is back to brewing potions and…solving mysteries?! (Source: Square Enix) Note: Won the Grand Prize in the Printed Manga category at the Tsugi ni Kuru Manga Award 2019.