The prosecution and defence each outlined their cases to a jury of 15 people on Wednesday, as the mother-of-two’s murder trial continues in Morwell, in regional Victoria.

Patterson has pleaded not guilty to three counts of murder and one of attempted murder, over the deaths of Heather Wilkinson, Don and Gail Patterson and for allegedly trying to kill Ian Wilkinson, who survived.

Earlier, Rogers said Heather Wilkinson had expressed concerns after the lunch Patterson had served the meals on different plates.

“I noticed that Erin put her food on a different plate to us, her plate had colours on it, I wondered why that was,” Wilkinson allegedly said before her death.

Rogers said Patterson told health professionals and toxicologists she had made a mushroom paste for the beef Wellington using fresh mushrooms from Woolworths and dried mushrooms from an Asian store in Clayton, Oakleigh or Glen Waverley.

But she said council investigators had found there were no dried mushrooms fitting the description Patterson had given in any of those stores.

Three of those guests, Don, Gail and Heather Wilkinson’s conditions became “unsurvivable” and all three died in hospital between August 4 and 5 after being diagnosed with Amanita mushroom poisoning.

The trial before Justice Christopher Beale continues on Thursday.

LISTEN NOW: The Mushroom Trial