Rather than the fiery flames however, it was boiling water followed with a baseball bat beating on her ex-husband as he slept.
The 39-year-old, who still shared a home with his attacker despite their divorce, suffered 60 per cent burns across his body.
Prosecutors said Tatad waited until her ex, who had just finished a night shift, was asleep, before pouring a full pan of boiling water over his body.
Then as he leapt up in pain she was waiting with the bat and she allegedly smashed him in the head.
San Mateo County District Attorney Steve Wagstaffe said: "The victim is in ‘pretty bad shape’ but will survive. He’s in for a long, long recovery.
He added that the man was unable to speak because of his injuries.
Explaining that Tatad wasn’t cooking anything prior to the incident and deliberately boiled the water for the attack he said: "It wasn’t like she was cooking breakfast. She boiled up that pot of water to pour on him."
Tatad was charged with several felonies, including assault with a deadly weapon, aggravated mayhem and torture.