Please eat it dipped in soy sauce like this.
This word consists of kanji with hiragana attached. Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means pickle or soak, so the verb version is to pickle or to soak.
Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You learned this reading with the kanji. Good for you!