镬

镬气

huò qì

"wok hei", a distinctive smoky, charred, and slightly caramelized flavor imparted to food cooked in a wok over a high flame (orthographic borrowing from Cantonese, Jyutping: wok6 hei3)

刀锯鼎镬

dāo jù dǐng huò

knife, saw and cauldron

斧钺汤镬

fǔ yuè tāng huò

battle-ax and boiling cauldron (idiom); facing torture and execution