When I make Home-Made Chile, it taste Better if I let it Simmer All Day then if I just chuck all the Ingredients and then heat it up. The Same goes for Spaghetti Sauce.
Not going to get into the Moral Right and Wrong of whether it Should or Not. It just Does. And that's OK. This is how I look at DIY and Retail e-liquids.
They just Taste Better, to Me, if I let them sit in a Cool Dark Place for 4~5 Days.
I'm not Into Shaking or Turning or Ultra-Sonics or placing them inside Pentagrams. I just put my e-liquids into a drawer and come back after awhile.
Listen to the brain in the jar...