Morrison's opinion risks leaving bad taste

Scott Morrison has risked putting Australian voters offside with a deeply divisive opinion.

The prime minister was determined to keep his personal views to himself during the federal election campaign, despite wanting to shape the contest into a presidential-style race.

But his guard slipped during a pre-dawn walk through the produce aisles of the Sydney Markets this week.

When asked to name his favourite herb, he did not hesitate.

"I love coriander," Morrison declared.

It was a controversial take, so close to polling day.

Morrison spent much of the past week fending off questions about his private opinions.

Does the Pentecostal prime minister believe gay people will go to hell?

He initially refused to be "distracted" by the discussion, before taking 24 hours to confirm that he did not.

Does Morrison still oppose same-sex marriage, having campaigned against legalising the unions and abstaining from a vote in parliament?

He refused to be drawn on the issue in the final sprint to polling day.

But coriander in-hand, he let loose with his views on the polarising plant.

Up to 13 per cent of people have a genetic reaction to the herb, believing it tastes like soap.

Another one-in-four simply dislike the taste.

That said, some palates do change over time.

Morrison will be hoping Australians have developed a taste for his political pitches over the past five weeks.

He's bound to find out on Saturday.