the texture of a good vanilla bean is like soft beef jerky or described as soft and leathery..and it is moist so in a coffee mill/grinder wont really work.
natural extraction of vanilla flavor is very easy actually...split the pod down the center with a sharp knife, scrape the seeds out and put them as well as the pods in PGA or Vodka. let it sit in a dark place for a month or so..shake once a week.
i just used PG and Vg as well as PGA because i want to be able to
vape it and i didnt want it to be all alcohol.