I made my first batch of 0 nic e juice and it turned out better than I expected. I used just under 10ml of VG, 3 drops of tobacco Absolute pure and 2.5ml of Pure Ethyl Maltol Crystals. I got all the ingredients form The Perfume Apprentice web site. They suggested to use a little heat to help dissolve the crystals so after I mixed the batch in a 10ml bottle I put the bottle in a cup of water that I nuked for about a minute and that seemed to work. 
