Madiran, the wine of this Haute-Pyrenees area, is little known in France, let alone New Zealand, but according to the plethoric, award-winning British wine writer, Andrew Jefford, I live in an are ...
Here in France I would use a gutsy Madiran wine, not unlike an aged syrah. Buy aged steak, about 2.5cm thick if you can and be sure to have the steak at room temperature before grilling.