Kashan rose oil

I've not tried this myself, but I'd be very interested to do so. Are we talking about the otto (= essential oil) or absolute or some other type of extraction?

My parents bought me a tiny vial of some stunning rose oil from there after they had been on holiday. Unfortunately they didn't ask exactly what rose it was. I can only think it is the damascus rose from the smell. The quality is wonderful.

In case it helps, these are the most likely options:

Rose otto (this is liquid at room temperature but solidifies when cold - so under refrigeration for example). It is made by distilling the rose petals with water and usually has a very pale yellow, almost white colour. The water used in the distillation process acquires a strong rose fragrance too and is both sold as 'rose water' and sometimes subjected to a further solvent extraction to give an absolute from rose water - I've never had any of that with rose, but I have some from the equivalent process with bitter orange flowers and it's very interesting.

Rose absolute (also liquid and will not usually solidify unless its very cold indeed). This is made by solvent (hexane) extraction of the the petals to yield a concréte - perhaps what your friend means by 'first oil' - the concrete is then further extracted 'washed' with alcohol, that is then evaporated off under vacuum to yield the absolute - second oil? - and leaving behind a rose wax that is still fragrant and sometimes sold for use in solid perfumes, soaps and candles but is no use for alcoholic perfumes because the alcohol soluble elements have been extracted.

There is also a Super Critical Carbon Dioxide extract, made by extracting the petals with CO2 that is kept liquid under pressure so that the extraction happens at room temperature. The resulting extract (technically a concréte) can sometimes then also be further extracted with alcohol to give an absolute that will be full soluble in ethanol. This last is relatively rarely done and horribly expensive.