In particular are there any that were found underwater ( in shipwrecks) that had vine still sealed in intact amphoras?
What was the condition of the found vine? Was it still drinkable? And most importantly how did it compare to modern vines in terms of qualiy?
Also if any other substances like olive oil or grain were found in similar manner?
Yes. Dog fish head brewery made a beer based on the findings of an ancient Egyptian beer, and below is a similar greek find. To be clear, they didn't open the tomb and chug away. But they were able to recreate using the same ingredients. http://www.dailymail.co.uk/sciencetech/article-2185958/2-000-year-old-shipwreck-discovered-Italy-preserved-FOOD-intact.html
http://www.dogfish.com/brews-spirits/the-brews/year-round-brews/midas-touch.htm