Hi Faizal ,
Can you explain me the 3 pulls to me?
Thanks
I’ll try to help here. As distillation happens the first molecules to boil off are the items with the highest vapor pressure, these are the typically lighter and more floral fragrances… citrus, lavender, etc
As the distillation goes on, typically the heat is turned up a little bit to get the items with the lower vapor pressure (Oud, rose, patchouly) to boil off - these can be heavier smells, though I imagine not always!
In this process, the distiller keeps the different fractions which get progressively heavier in molecular weight, generally, as they all smell different.
The combining of these fractions and various ratios is part of what makes this an art not a science.
I’m sure someone will come in here and improve my description, but I hope this helps you a little bit.
Source: former organic chemist, familiar with fractional distillation, thin layer chromatography (an interesting twist on this whole process)….
(Edited to be more accurate)