Be very careful. I have exploded a few bottles this way. If anything I would just get some hot water going on the stove and use that instead of using the microwave.

Tried it once, the vg foams up like a marshmallow and gets really hot under 6 seconds in. If you even try it, make sure the caps off or somethings gonna explode. With that said, it gets really hot and almost cooks the juice and ruins the flavor. What I do is take a mug and fill it with really hot water and mix my flavors in the bottle sitting in the mug. Works like a charm.

In a pinch I just microwave a coffee mug half full of water, let it cool from boiling for a few minutes, and plop a bottle on it. Becomes the consistency of water after a few minutes!

If im in a rush I put it in tor 2 seconds and shake. And repeat 3 times max. Usually works good.

http://m.target.com/p/hamilton-beach-1-2-qt-party-dip-food-warmer-33101

Ended up getting one of these free... I think it was when we bought a large sized crock pot.

I use it to steep my juice, it works amazingly well.

VG thins out pretty quickly, the best thing to do is let the bottle sit in warm/hot water for a few minutes, then shake until your arm falls off. I'm not sure a microwave is the best thing to do.

I find the bowl of microwaved rice works really well. Fill a cereal bowl with rice, microwave for 1:30-2:00 minutes (1100w microwave) and then take the top off and stick the bottle in the hot rice as far as it will go. I find that warms it up quickly and keeps heat for about an hour. 1-2 hours of that will let it breathe nicely, as well as thin it out to blend the flavors.

I do this regularly, 5 seconds. My microwave is mid powered at best, I get no over heating and is usually consistent between 20-30ml.

I used to do water, tried rice. Naw, 5 second zap, quick shake: vape

I've tried this myself but haven't noticed too much of a difference to continue on with it. Like others have said, a hot water bath is probably a better choice. Especially when dealing with plastic.

I would watch your temperature. I remember reading somewhere that anything over 112F (boiling) degrades flavor at a rapid pace.

I would be scared some parts would be heating unequally to others.

Candle warmers are cheap.

I personally wouldn't microwave plastic bottles because I don't want plastic leeching into my juice. However, I have microwaved juice in glass bottles for ~5 seconds at a time before shaking waiting for the bottle to cool down, and repeating three times more. Of course no speed-steeping method will ever work as well as time, but this method will work in a pinch.

Ultrasonic cleaner + warm water (I microwave a mug of water for 3 min) = happy juice. Pour the hot water into the cleaner, place the bottles in with the tops off and let it run for 5-6 min. It mixes the juice as it thins out.