The in-ducker is new to Jamieson's arsenal and if early results are anything to go by, it'll be an important part of his repertoire.
"I tried to get a little bit greedy and bring it back and was lucky to hit the sticks a couple of times," he deadpanned.
CD, who were well positioned at 91-3 chasing Auckland's paltry first innings of 167, were suddenly in tatters at 91-6.
They were eventually dismissed for 150. At tea on the second day of four, Auckland were 117-2, a lead of 134, with Glenn Phillips unbeaten on 55.
Jamieson, 25, made his test debut for New Zealand last season and made an immediate impact, taking nine wickets against India across two tests, including 5-45 at Christchurch.
Over the winter, he worked on attacking the crease a bit harder in his run up. He is also in as good a physical shape as he's ever been, having spent a rare offseason working on his fitness.
"I want to create a bit more momentum and be more efficient and effective for longer periods," Jamieson said.
Although he hasn't bowled with a speed gun yet this season the speed appears to be up as a result, as does the energy and intensity, as can be seen by his wicket celebrations.
"I got a bit carried away in the moment," he said of his exuberant celebrations.
In admittedly bowler-friendly conditions, Jamieson opened the Plunket Shield season against Otago with figures of 5-39 and 3-6 and troubled all batsmen with his pace and bounce.
The more accomplished CD side have also found it tough.
Just before stumps on day one, Ross Taylor flailed at one outside off stump and was caught at first slip by Phillips, and he has followed up with this morning's hattrick.
In a statistical oddity, the ball that preceded the hattrick was a top-edged hook for six, giving the over a curious dot, dot, six, wicket, wicket, wicket sequence.
With the last ball of his 16th over, Jamieson achieved another five-for, inducing Doug Bracewell to drag a wide ball back onto his stumps. Compared to his other wickets, it was anticlimactic, but it counted all the same.