Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You didn't learn that reading with this kanji, so here's a mnemonic to help you:
When you go to carry to extremes, you're going too far, so there has to be a key word (きわ) that you say to make the other person stop. "CACAO! CACAO!"
It is no easy task to master the Japanese language.
My dream was to enter the legal profession and master the law, but I've just become extremely busy with work.