A MUST-DO. This winery has not only incredible wine (one of which has become Jessica's all time favorite vinosanto), but the best food we had on the island. Come hungry! We did the 5 course "Volcano Divers" tasting for two. We pre-paid through their website ($200 I believe) which is pricey but you can just go and get a la cart items as well. They also take you on a little tour if you do one of their packages and they are clearly passionate about what they do. Some of the grape plants have over 100 year old vines that are braided with a special technique and can only be found on Santorini. Truly a unique experience we would do over and over again if we could.
Yummy gelato tasting all around the island doesn't mean they're all created equal. This was the best we personally found. It has a few unique flavors like rose and some old classics lie pistachio as well.
Don't let this tiny counter service corner of Fira fool you. It had really good Gyro, better than 2 or 3 other places we tried. If you're on the lookout for a pita gyro you need to go to this one.