In the U.S., Californian olive oils are your best bet. Otherwise, Costco Kirkland Signature olive oil (which is now Greek oil [1]) is another good choice.
Outside of Italy, it's difficult to find Italian olive oils that are not blended. The 2014 and 2015 harvest seasons have been terrible due a bacterial blight [2] that crippled many olive farms in Southern Italy.
Outside of Italy, it's difficult to find Italian olive oils that are not blended. The 2014 and 2015 harvest seasons have been terrible due a bacterial blight [2] that crippled many olive farms in Southern Italy.
[1] http://www.seattletimes.com/business/retail/costco-embraces-...
[2] https://en.wikipedia.org/wiki/Xylella_fastidiosa