If steeping is so good (for certain flavors at least) then why do suppliers not offer "Pre-steeped" liquids? Are there restrictions on doing so? To me it seems like they could even charge more for "Aged" liquid
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I mix my own juices. I have found that the flavor can change greatly in less than a week. Depending on the flavors, in a month it can change so much it doesn't seem like the same juice. When you order a juice it takes at least 2 or 3 days before you get it in the mail....a freshly mixed batch is already half steeped by the time you receive it. Look at it as if it were bananas at the grocery store. They are some what green when you buy them because you aren't going to eat them all in one day.
It so hard to let a new juice you just got sit for a week without trying it. I usually dive in and let the bottle steep from then on.