I wanted to go to Lolita's in Oia, but it is closed on Sunday. The next closest option was Kayak.
Pistachio great colour and little crushed bits but flavour very mild not very sweet, but creamy. Yogurt smooth and a tiny bit tangy. It was really expensive at €3.5 per scoop, but to enjoy the sunset with a gelato is priceless (or at least worth €3.5 each).
Also sold in some cafes on the island but easy to skip if you can find another decent and cheaper one instead.