Short for petillant-naturel, aka methode ancestrale. A traditional method of making sparkling wine that is, in fact, the world's most ancient. The wine is bottled before the primary fermentation is finished, delivering a lower pressure, lightly sparkling wine in the petillant style. The wine is finished without the addition of secondary yeasts or sugars. Pet-nat wines can manifest as cloudy, unfiltered and capped with a crown seal, and they can be white, rose or red in colour. They are a rare item in New Zealand, and don't have a particularly long shelf life. Tip: do not leave them in the boot of your car in the heat of summer.