Two things: rich red clay in the hills around Vathi and Kamares, and a culture that turned pottery into the island's main export. By the 19th century, Sifnian potters were travelling the Aegean every summer to set up wheels in other islands' villages.

A wide, lidded clay pot used to slow-cook the Easter lamb dish of the same name. The shape traps moisture and concentrates flavour. Every Sifnian household has one.

Atsonios (Vathi) — the dean of Sifnian potters, fourth-generation, watches the wheel with a coffee. Lembesis (Kamares) — modern shapes, beautiful glazes, ships internationally. Aperathitis (Artemonas) — small studio with weekend wheel demos.

A small skepastaria (chickpea pot) costs €25–€40 and packs into a suitcase wrapped in a t-shirt. It's the best souvenir the island sells.