I have had a bag of Malic Acid around for some time now from ECX. I tried it before at about 1/8th a tsp in 5mL PG and then 1/4th tsp in 10mL PG to rather metallic and nasty effect. I recently even tried 1/8th tsp in 10mL of 50/50/0 (PG/VG/Nic) and then added an additional 15mL PG to try and make it work for a total of 20mL to 1/8th tsp. Yet still just a slight irritation in the throat and more or less a metallic taste (just throwing about 1 drop onto my iGo-L full of raspberry). I know people have had success using it but I just am not - any suggestions?