When I owned a restaurant, I shared my nightly dinner wine with other guests along with a brief description of the wine. Sales soon doubled. I now advise clients to do the same. We suggest opening a different red and white each evening and pouring guests a taste.
Guests appreciate the complimentary samples and quickly learn what they like.
We build wine sales, good will and customer loyalty in one simple action. That's not necessary. We've never failed to increase wine sales using this technique. When done properly, I recommend it to all. In restaurants with really good service the server might offer this before we even ask.