Hello, I just got two 100ml bottles of grants vanilla custard, 1 max vg and 1 pg. What is the best way of steeping this liquid ? I hear leaving the lid of kills the flavour and to just leave it in a dark box where the sunlight can't get it ? There are so many different ways of steeping, I just want someone's opinion on the best way to steep, or just that I'm doing it right.., also for anyone who has tried gvc I can taste a alcholy flavour in the juice, does this go with steeping ? ( delivery arrived as I was in shop so probably quite fresh )