E-Liquid is made from two main base ingredients, Propylene Glycol and Vegetable Glycerine (PG / VG). These are mixed in various ratios, depending on the liquid that you buy, alongside with food grade flavourings and nicotine if you choose to have any. The higher the VG, the smoother the vaping experience. This page displays our 30VG / 70PVG liquids, which will provide more of a throat hit due to the higher ratio of PG, and requires less power to vaporise. This type of liquid is much more suitable for MTL (mouth to lung) starter kits.