Linda found that PG gave her a dry mouth & black tongue. Her search for quality vg e-liquid with lasting flavour and no burning saw just go through 20+ e-liquid vendors. The best one she really liked was imported from the USA and rarely in stock. Now Linda vapes 100% vg e-liquid every day, and is very happy with the flavour.
Flavourings may well have some PG but it will be a very small amount. We did look into making our own "organic e-liquid" but no one could supply nicotine from organic tobacco that we could find. We did find some suppliers offering "organic flavourings", but when asked to supply soil association papers they did not reply!