A rare item since early September is Rantistis’s local yoghurt. The word on the street is that this is not the time to collect ewe’s milk. As days shorten in the fall, dairy ewes are milked less frequently and then the milking season ends for the year. Sheep can (or will) lactate for up to 8 months per year. Then they don’t. And they are not.
However, sheep milk can be frozen without being negatively affected for cheese production. Whether this applies to yoghurt, I don’t know. There is sheep yoghurt from Volos for sale in stores now, well into the non-lactating season.
A wild guess about Randistis’s operation is that, since he also produces cheese pies, summer milk has been frozen to turn into cheese as needed for pies.