By 'steep' does it mean just let the bottle sit around awhile? Opened or unopened? Just want to be sure. Thanks.
Steeping is usually 48 hours cap and nipple off. Shake a couple of times a day. Caps back on and put them away for a week or two, shaking them whenever you think about it. Try it out after a week, if it still tastes meh, try it again after another week. Some juices need less time while others need more. I find the more complex the juice, the more time they need to meld the flavors that make up the juice.
Some juices don't need steeping at all. All you can do really, is try it out. If it has a perfume-y or chemically taste, steep it. If I smell the juice, I can tell if it needs steeping since I have my sense of smell back, just by smelling a chemically scent.
It never hurts to steep.
