depends on how much pg/vg/etc you use to cover your net x lenght of time (30min-6months) + filtration = what to expect
What is it you are trying to make?
here is something simple, and it works..
go pick up some rosemary, Bilo (grocery store) carries it.. small package.
Take the rosemary (all of it) and put it in a mason jar.. use a wooden spoon and just crush it.
not till its all pulpy but just simple smooshing..
next, fill your jar with pg or vg till it's covered the rosemary..
you have 2 options.. time or heat.. pick one..
if you go with time, place in a dark corner, and using wooden spoon, stir it for the next 3 days, 2 times a day.. then check on it.
if you go with heat, there are 2 ways of doing this too..
stove top: take your jar, add it to a pot of water, heat till just boiling, stir, leave it there from 30 min to 3 hours..
crock pot: take your jar add to crock pot, place lid of crock pot at an angle, turn on low/warm, and leave overnight..
if by the end of testing it is still too light, go snag some more rosemary, and repeat process with the same pg/vg in jar..
you may have to top it off a bit..
filtering: I use mesh and then coffee filters, and then if I feel I really want it filtered, I use a big syringe and cut the tip off..
stuff some cotton balls on the end and slowly filter that way..
It always depends.. on what you are making, for what purpose..
here are a few links, hope you might find something that will help..
http://www.vapemeup.com/2011/11/diy-e-liquids-from-natural-extractions.html
http://blog.v-ecigs.com/2014/03/secrets-revealed-net-e-juice-holy-grail.html
http://forums.aussievapers.com/diy-juice-recipes-mixing/24577-making-your-own-organic-ejuices-q.html
http://www.reddit.com/r/DIY_eJuice/comments/1sost6/creating_extracts_to_be_used_in_ejuice/
http://oxle.com/topic.asp?tid=6476
http://www.vapesquad.com/how-to-brew-your-own-tobacco-e-liquids/
there are thousands of links on this topic.. please use common sense on anything containing sugars..
the reason I smoosh.. and not crush, is so that the plant can release the flavors that make it what it is..
i "renew" if I want it stronger, after 3 days.. it works for me..
Just like you grind tobacco into smaller pieces to either soak or roll
as to why or what vendors do to make theirs.. we all have our own ways of doing things.
Is it top secrete? no.. just pay attention to what you are doing and you will see results..
Cold PG Maceration
Simplest way is to put your 1oz in a 1qt mason jar.
Then fill jar with enough PG just to cover the tobacco.
Or start with 1/2 oz just to downsize a bit.
Mine's been soaking for 3 months and still isn't strong enough though.
But I used an organic Virginia Flue Cured loose leaf, which I don't think is very strong, and no flavor/coatings.
Most have had better luck it seems with pipe blends and cigars.
Some use pure PGA for a faster way (days usually).
But involves heat to evaporate the alcohol afterwards.
Then some PG is added (midway) cause you want the goodies to transfer into the PG carrier for vaping.
And then continue to evaporate the rest of the alcohol.
Way more complicated but yields a cleaner extract, supposedly.
Big thread over at the other place about DIY Nets.