火ひを通とおす

expression, godan verb (-su)

cook; heat; apply heat to

Used when heat is applied to food, often to make it safe to eat or to prepare it. Implies cooking through or heating sufficiently, not just warming.

• 生なま肉にくにはしっかり火ひを通とおしてください。

  Please cook the raw meat thoroughly.

• この野や菜さいは火ひを通とおすと甘あまくなる。

  This vegetable becomes sweet when you cook it.