Pour your flavor concentrate medley into the E-Base™ ready-to-flavor nicotine base. Because this recipe only calls for three milliliters of flavoring, the volume totals to 28.5 milliliters, so your e-liquid’s finished nicotine strength will be a little higher than the E-Base™ target strength (which is calculated based on a total volume of 30 milliliters). You can certainly add an extra milliliter of VG or PG if you want your end-result to match the E-Base™ target nicotine strength, though the flavor will be a little less prominent. Remember to have fun while being safe.