title_body: Where can I find open APIs with wine data (such as numerical expert rating)?
upvoted_answer: The closest thing I can find (and am currently aware of) is LCBO API. This free API provides details for products sold through the gov't owned liquor retailer in Ontario, Canada. They have a fairly large selection as they are one of the largest buyers of alcohol products globally.
  
  By providing a product's SKU code to the API, you can retrieve some of the product details you're looking for except rating, and varietal. As a consolation, it does provide details on wine type (red, white, rose, champagne etc.) and country (incl. region for some products), but doesn't provide details such as Chardonnay, Sauvignon Blanc, Cabernet Merlot, etc.