Without taking any risks, the two Kiwi batters easily collect six runs off Jadeja's seventh over to stay in touch with the asking rate.
New Zealand were lucky to get a wide in that over after Mitchell was beaten trying to play the cut as the ball looked well inside.
Kuldeep, who went for 41 in five overs, is back into the attack.
Mitchell taps the first ball with soft hands on the off-side for one and Young reverse sweeps the next for another run.
Mitchell collects an easy run to long-on and Young picks one to long-off before the former gets two runs off the last ball courtesy of a misfield, as again they pick six runs from the over.
Jadeja continues as Young slaps the short wide delivery perfectly in the gap at covers for a boundary, with singles coming off the remaining five balls to make it nine from the over.