I got stumped on the word due to not knowing the onyomi reading for 懐 but I’ve heard かいせきりょうりa bunch of times and I’m sure others too. I also noticed the only vocab for 懐 is 懐かしい; I don’t recall many single-vocab for a kanji in 地獄 so would WK consider adding this one? Or how about 懐（ふとくろ)?
Interestingly, there are two spellings for かいせきりょうり
Here is an article with a good explanation with English/Japanese for anyone interested: