noun
open fire; direct flame; direct heat
Used mainly in cooking to describe heating directly over a flame or fire, as opposed to indirect methods like ovens or microwaves.
この鍋は直火にかけられますか？
Can this pot be placed directly over a flame?
直火で焼くと、外はカリッと中はジューシーに仕上がる。
When grilled over an open fire, it becomes crispy on the outside and juicy inside.
Compound of 直 (じか, 'direct') and 火 (ひ, 'fire'), with rendaku voicing of ひ to び.