I see your point however I really dunno if you could just soak mimosa or viridis in alcohol to extract it in tincture.
You could at least make a mimosa brew, get rid of the tannin and filter it well then mix it with pure ethanol to a 40% ratio...
Then you'd just have to slitly boil the tincture to get rid of the alcohol.
Or just perform one or the other dmt extraction from the wiki and get your spice dillute in any tincture base : vinegar, glycerin or water/ethanol dilution.
And do the same for caapi so you'd have two bottle to dose your pharmahuasca.
I've only did it with extracted spice and harmalas from caapi.
Good luck with that !
Smell like tea n,n spirit !
Toke the toke, and walk the walk !