OK, I'm blushing while typing this but here goes.
If I've made juice and am going out, going to me needing the fresh juice at some point while I am out, I stick it down my bra and use my own body heat, no need to shake it or anything, my general moving around does that nicely, after an hour I take it out and stick it in my bag.
Done this a few times and the result is that it tastes like I made it a week earlier and it has been steeping on its own in the cupboard.
Please don't judge me (at least I found something that works in a rush)
If I've made juice and am going out, going to me needing the fresh juice at some point while I am out, I stick it down my bra and use my own body heat, no need to shake it or anything, my general moving around does that nicely, after an hour I take it out and stick it in my bag.
Done this a few times and the result is that it tastes like I made it a week earlier and it has been steeping on its own in the cupboard.
Please don't judge me (at least I found something that works in a rush)