You will find with some pre-mixed juices that if you remove the cap and place it in a dark place for some time it will mute the flavor and bring out the richness of the juice. I personally uncap my juices for 24 hours in the closet before use. Now when I mix my own it does'nt seem to be as big of an issue because I have had most of my extracts for some time, and they have already received some steeping from frequent opening. I guess you could steep your extracts as well, probably would'nt hurt. Rule of thumb, if I open a pre-mix and drip it, if the flavor is too much or not so good, i will steep it open for 24 hours, then cap it and leave it in the closet for at least a week, then revisit it, and it usually will taste better. I say usually, because some could steep till the end of time, and they still taste like doo-doo.