期酒（En primeur或 "wine futures"）是一种早期购买葡萄酒的方法，让消费者有机会在当年的葡萄酒还在木桶里尚未装瓶时，购买特定的葡萄酒。期酒是在年份酒上市一年或18个月以前先行付款。购买葡萄酒期酒的一个可能的好处是在期酒时葡萄酒的价格可能比装瓶并在市场上出售时低很多。然而这也不一定，一些葡萄酒可能随着时间贬值。葡萄酒专家，如汤姆·斯蒂文森（Tom Stevenson）,推荐购买那些产量非常有限，在上市时很有可能购买不到的期酒。虽然也有一些其他的地区采用期酒的方式，但来自波尔多, 勃艮第, 罗纳河和波特酒的葡萄酒的期酒最常见。

En primeur or "wine futures", is a method of purchasing wines early while the wine (a vintage) is still in the barrel. This offers the customer the opportunity to invest before the wine is bottled. Payment is made at an early stage, a year or 18 months prior to the official release of a vintage. A possible advantage of buying wines en primeur is that the wines may be considerably cheaper during the en primeur period than they will be once bottled and released to the market. However, that is not guaranteed and some wines may lose value over time. Wine experts, like Tom Stevenson, recommend buying en primeur for wines with very limited quantities and will most likely not be available when they are released. The wines most commonly offered en primeur are from Bordeaux, Burgundy, the Rhône Valley and Port, although other regions are adopting the practice.