SYDNEY, Australia (AFP) — Three Australians died of organ failure after eating a beef Wellington dish laced with toxic mushrooms, a medical specialist said Friday during a triple-murder trial sparked by the deaths.

Erin Patterson, 50, is charged with murdering the parents and aunt of her estranged husband in 2023 by serving them a hearty lunch laced with lethal death cap mushrooms. 

She is also accused of attempting to murder her husband’s uncle, who survived the meal after a long stay in hospital. 

Patterson has pleaded not guilty to all charges in a trial that has drawn intense interest from around the world.

Intensive care specialist Stephen Warrillow told the high-profile trial on Friday how doctors had scrambled to save the lunch guests. 

But as the toxins coursed through their bodies, causing multiple organs to shut down, there was little they could do. 

“It was very apparent that this was not survivable,” Warrillow said, talking about one of the victims he treated. 

Another victim got “relentlessly worse” even after receiving a liver transplant, he said.

“We had no other treatments to offer, no other therapies. He was dying,” the doctor said. 

Warrillow was asked if the organ failure was caused by mushroom poisoning. 

“That’s correct, yes,” he told the court.