Jaya Dharneja reiterates the importance and the key characteristics for good content on a winery website:

• High quality, well crafted and accurate product descriptions and titles
• Sharp product images
• Key product differentiators, such as a high rating your wine may have received
• Recommendations from customers, staff and noted people in the industry
• Any specifics about your product that can create the “wow” factor for the end user
• Original content – that is specific to your winery via the About Us section, or within the site, to attract eyeballs and increase click-thrus

Source: http://blog.inertiabev.com/