PDO Santorini / PDO Vinsanto / PGI CycladesAssyrtiko, Aidani, Athiri, Mandilaria, MavrotraganoFounded 1870Koutsoyannopoulos familyVothonas
Koutsoyannopoulos family canava at Vothonas (between Fira and Kamari), founded 1870 and operating since the 1990s with the on-site Wine Museum, an 8-room cave display covering 300 years of Santorini viticulture.
Tasting: Daily year-round; the visit combines the working winery, the underground Wine Museum (an 8-room cave tracing 300 years of Santorini wine history), and a tasting flight of the estate's Volcan Wines bottlings.
Signature wines: volcan-wines-assyrtiko, volcan-wines-nykteri, volcan-wines-vinsanto
Tip: The cave Wine Museum is the most child-friendly wine attraction on Santorini and one of the few rainy-day options on the island; the tasting flight afterwards is solid value.
Domaine Mikra Yi ★ 4.2
PDO Santorini / PGI CycladesAssyrtiko, Aidani, MavrotraganoFounded 2007Megalochori
Small estate working ungrafted kouloura parcels in the Megalochori area, founded in the late 2000s as part of the post-2000 boutique-winery wave. Limited production, by-appointment-only visits.
Tasting: Boutique by-appointment visits; small parcel of own-rooted kouloura vines near Megalochori, with a tasting room focused on single-vineyard Assyrtiko and a tiny Mavrotragano production.
Signature wines: mikra-yi-santorini, mikra-yi-mavrotragano
Tip: A hidden-gem stop for serious visitors who want a quieter, smaller cellar experience away from the cooperative-rim Santo Wines circuit.
Domaine Vassiliou Santorini ★ 4.0
PDO Santorini / PGI CycladesAssyrtiko, Aidani, MavrotraganoFounded 2010Vassiliou familyMegalochori
Small Vassiliou family operation at Megalochori producing estate-bottled PDO Santorini Assyrtiko in limited quantities. By-appointment visits only; output is mostly sold direct.
Tasting: By appointment only; small family cellar offering a focused PDO Santorini tasting and a Vinsanto tasting on request.
Signature wines: vassiliou-santorini-assyrtiko
Tip: A reservation-only stop for visitors who want to taste an older-style family canava away from the major tasting-room operators.
Volcanic Slopes Vineyards ★ 4.1
PDO Santorini / PGI CycladesAssyrtiko, Aidani, MavrotraganoFounded 2010Akrotiri
Boutique estate working parcels on the southern (Akrotiri) end of Santorini, where the most-exposed cliffside vineyards sit above the Vlychada black-sand beach. Small production focused on Assyrtiko and Mavrotragano.
Tasting: By appointment; visits focus on the southern Akrotiri vineyards above the volcanic black-sand beaches, with a tasting flight emphasising the southern-exposed, wind-scoured style.
Signature wines: volcanic-slopes-pure-volcanic-assyrtiko, volcanic-slopes-mavrotragano
Tip: Worth combining with a visit to the Akrotiri archaeological site and Red Beach; the southern-exposure style is leaner and more saline than the central-island norm.
PDO Santorini / PDO Vinsanto / PGI CycladesAssyrtiko, Aidani, Athiri, Mavrotragano, MandilariaFounded 1991Kir-Yianni group (majority shareholder since December 2025); Paris Sigalas (founder)Oia
Paris Sigalas's 1991 foundation at Oia, anchor of the northern half of Santorini and a centrepiece of the Mavrotragano red-grape revival. Now part of the Kir-Yianni group (Boutaris family) since the December 2025 acquisition, with Stelios Boutaris as CEO.
Tasting: Year-round; tastings by reservation, Monday to Sunday 11:00 to 18:00. Multi-flight options including a Mavrotragano deep-dive and a Vinsanto vertical.
Signature wines: sigalas-santorini-assyrtiko, sigalas-kavalieros, sigalas-mavrotragano, sigalas-vinsanto
Tip: Kavalieros, the single-vineyard Assyrtiko from a parcel near the village, is the flagship and benefits from 4 to 6 years of bottle age.
PDO Santorini / PDO Vinsanto / PGI CycladesAssyrtiko, Aidani, Athiri, Mavrotragano, Mandilaria120 haFounded 1903Argyros familyEpiskopi Gonia
Argyros family estate at Episkopi Gonia, founded 1903 and now in its fourth generation. The estate farms more than 120 hectares of own-rooted kouloura Assyrtiko; average vine age exceeds 70 years with some parcels over two centuries.
Tasting: Year-round tasting room at the Episkopi Gonia winery; bookable flights covering PDO Santorini, Cuvée Monsignori, Mavrotragano and a Vinsanto vertical (Vinsanto bottlings of 20 and 40 years are routinely poured).
Signature wines: argyros-santorini-assyrtiko, argyros-cuvee-monsignori, argyros-mavrotragano, argyros-vinsanto-20-years
Tip: The Vinsanto 20 Years carries 20 years of barrel ageing under the PDO Vinsanto regime; the standard PDO Assyrtiko sits at the EUR 25-35 retail band.
