I've done it before with mimosa hostilis, and yes it definitely works.

I believe it was ~2.5g of strong bark, extraction yielded 2.5%, and combined with a 3g rue tea made by boiling the seeds in distilled water/a bit of vinegar, it was a very intense experience, and purge.

This was the way i first took ayahuasca, and it was far too large/strong of a dose, but i managed to keep my mind through the trip.

I think the best way to do it, would be to use a very dilute acidic solution, lets say 2% vinegar, or 2ml/liter of distilled water. I would shoot for no more than 16oz per dose as it will taste fairly repungant. This is assuming you don't want to boil it at all and go full cold water brew.

Let your bark soak for a day or two in 75ml of slightly acidified distilled water per gram of bark used, shake it often, then freeze it (break the cell walls, also kills bacteria), let it thaw for 24hr, and filter well. Like buchner funnel, and a vac flask, or decant it in the fridge until the solution is transparent (but dark purple), and pour off as much as you can leaving the sediment.

Repeat that a few times, and you can get away with a cold water mhrb tea, where a strong dose could be as little as 12oz of liquid, depending on your bark potency.

You could also let it evaporate without a stovetop, being careful to not let it mold/bacteria to grow (dry, well ventilated, warm air), and end up with a much smaller volume of tea, syrup, or even a resin.

Its a nice way to go, and i won't say i'll never take aya that way again, but i like extracted pharma with dmt fumarate and caapi crock pot brewed tea alot better. Simply because it doesn't have such a strong purge. Sometimes no purge at all even.

Rue tea, or MHRB tea, almost always makes me violently purge, and is very nauseating up until that point. Not to say that's exclusively a detriment. The purge has its advantages, as does cold water brews/tea.

You can do it with rue as well, but caapi is just not potent enough by weight to make it practical, unless you want to use heat to reduce the volume of your cold water tea, or wait a while for it to evap so you don't have a liter or more of tea to drink, and watch it carefully for contamination during the time its reducing.

I think mhrb is orally active with a cold water brew, and indigenous cultures used it that way in some parts of south america. They use only mhrb bark though, no maoi.

Add in some caapi/rue tea (cold or hot prepped), or extracted harmalas, and get ready for the ride of your life vs straight mhrb tea though.

Definitely worth a shot if you have a week or so to prepare it properly to get a potent dose, it can be done with mhrb, rue, or caapi, but caapi takes along time/lots of water, and always use distilled water/a small amount of vinegar. Helps prevent contamination to a degree. Freezing it also ensures sterilization from bacteria, and the ice crystals break down cell walls and help the alkaloids leach into the acidic water.

Also, an easy way to get pure mhrb fumarate alkaloids, is to do a standard acid base acid cook/reduction, evap that to a resin. Mix it 2:1 lime (caoh:mhrb), add enough water to make a watery paste. Dry it overnight, but keep it out of light/high temps.

Take your dried basified resin, pull 3x with DRY acetone, decanting or filtering out any sediment, and add fumaric acid saturated acetone to the combined 3 acetone pulls you now have. You'll instantly notice clouding, then precipitation of fairly pure dmt fumarate crystals.

Once it stops clouding let it sit in a sealed container for a few hours, then add more fasa (fumaric acid saturated acetone) until it no longer clouds. Waiting a few hours between each addition of the fasa. You can't add too much fasa, since any fumaric acid will be soluble in the acetone you pulled with, but its best to be as efficient and frugal with your extraction supply's, so try and conserve your fasa/acetone. No need for waste here

Leave it overnight, pour off the acetone, and dry/scrape out your fumarates. Should powder to a fine, dry, yellow/off white powder that is very bitter, and not sour tasting.

You can also just do that with freebase dmt. Just dissolve it in minimal dry acetone, and add fasa to it to precipitate dmt fumarate crystals. I assume you probably skimmed across it while researching extraction methods, but take a good look at the fasa teks.

If you can get dry acetone (or isopropyl), fumaric acid, and lime, it works very, very, well, and gives you a very pure product if done correctly without much if any loss in yeilds during the conversion to the fumarate salt.

But find the tek in the wiki, its probably a lot easier to follow/read, and has graphics to make it easier to understand. This is just my process i go by from memory. Others have communicated it and made teks with alot more forethought as to communication of the process to a general audience.