While Labour's hoping its GST-free fruit and vege policy will be a voting goldmine, it's turning out to be a bit of a minefield.
Are fresh herbs included? What about lettuce seedlings? Is garlic a vegetable or a spice or a herb?
"There are always going to be questions about somethings that sit at the margin," Labour leader Chris Hipkins said on Monday.
Newshub went shopping and brought some marginal items to his press conference.
Shown some basil in a pot, Hipkins said: "That... that is a plant... so we'll have to... I don't have a clear answer for you on that."
What about coriander chopped off in a packet?
"You wouldn't pay GST on that."
A bulb of garlic?
"You would not pay GST on that."
And some vacuum-packed peeled cloves of garlic?
"We would have to consider how that was processed on the packaging."
Where to draw the line is a real boondoggle
"The definitional issues about what's in and what's out becomes very complicated and becomes very complex to administer," said National leader Christopher Luxon.
Asked whether a punnet of lettuce seedlings would be exempt, Hipkins said: "You'd pay GST on those almost certainly."
But what if you could chop off the lettuce and use it for a salad?
"You can keep going if you like, I've already answered that question," Hipkins said.
On some baby beetroot?
"It would depend on the way they were processed."
It's not just how the policy will work that's being questioned - but also, is it even the right policy? Health Coalition Aotearoa says it's not.
"If we had some support for local food hubs like fruit and vegetable co-ops that would help bring the price down supplying locally grown fruit and vegetables to the communities where they live we think that could be a lot more effective," said Dr Lisa Te Morenga.
Then there's the problem with the fruit and vege fiscal hole.
The original factsheet Labour released costed the policy at $1.985 billion. But on Sunday night, the factsheet on Labour's website changed to costing $2.22 billion. That's a $235 million error.
"We should have more proactively corrected it on the day. I acknowledge that," Hipkins said.
But National's finance spokesperson Nicola Willis said: "If what he did was a quiet little fix-up without letting anyone know, then that's a bit shabby and it certainly doesn't build trust or confidence."
Especially when there's so much detail still to work out.
