Steeping may improve the perceived flavor of an ejuice or eliquid.  This is the process of allowing the bottle to breathe in a dark place for a period of time.  This is a subjective process and will vary from Northlander to Northlander.  Here are three sources you can use to help reach your own educated and unadvised opinions:Vaping Logs - http://vapinglogs.com/1310/2013/05/07/steep-e-juice-revisiting-common-question/Best eLiquid Info - http://besteliquidinfo.com/what-is-steeping-an-e-liquid/ECF - https://www.e-cigarette-forum.com/forum/threads/what-is-steeping-your-e-liquid.400384/