The product description that has been on their web site for decades ...has recently changed
I always thought that it was a thin mix of VG & MPG ?

old blurb

An extremely well-known product, stunning in its simplicity, slightly sweet, very palatable

In reply to Post #1
Wasn't it just Glycerine? Good for hardening the bait aswell

I'm not sure, i figured it was one or both
maybe 35% glycerin solution it's thinner than 100% VG, and I wouldn't call it sweet
If I remember correctly it didn't thicken up in the winter when the shed was frosty on the inside

PG & VG are pretty common.emulsifiers and I have litres of both.. .certainly not paying the equivalent of £35 a litre