My amateur winemaker brother has some "Brewer's Best" extracts. Unfortunately, there is no ingredient list on the labels. Some of them are obviously not usable for vaping. The blueberry for example was very syrupy, opaque, and appeared to have artificial coloring, though it smelled good. Against my better judgment I tried his Apricot, which appeared to be of a PG based viscosity, just for kicks and giggles. Think I used 10%. It was very weak, could not taste anything. He said he uses 3 4oz bottles per "batch" (I have no idea what size a batch is). Based on what most of them looked like, I wouldn't use them for vaping due to suspected sugars and artificial coloring. Some of them are probably usable. Make your call.
For what it's worth, the essentially useless data sheet for Apricot...
http://www.brewersbestkits.com/pdf/Nat flavor fids/Apricot FID.pdf
Yeah, vanillin, maltol, PG, but it doesn't list anything else.
For what it's worth, the essentially useless data sheet for Apricot...
http://www.brewersbestkits.com/pdf/Nat flavor fids/Apricot FID.pdf
Yeah, vanillin, maltol, PG, but it doesn't list anything else.