Erin Patterson's murder convictions for the deaths by mushroom poisoning of her estranged husband's relatives has prompted fevered speculation across Australia about her motive.

Patterson, 50, was charged with murdering three relatives of her estranged husband by serving a beef Wellington laced with toxic mushrooms over lunch in 2023.

Erin Patterson hosted four of her estranged husband's relatives for lunch in July 2023. Three of them later died of death cap mushroom poisoning. Nearly two years later, a jury has found her guilty.