I have six trees and this is typical of them all, second year in the ground, interplanted with many other things. I topped and began pruning last year, and this year have added weights from logs and tied them down with string.
Typical unpruned form of soursop:

My raised bed of six trees:

Pruned and tied down to shape:

You got me excited to place an order, but it looks like they're sold out 

I gave up on buying Cherimoyas in local grocery stores as they are fairly expensive ($10/lb) and not that great.

I think the Pitanga do cerrado is a different botanical species with a dwarf habit and often a slightly different type of leaves. The one you have looks like Eugenia Uniflora to me, but I am not a botanist.
When you offer seeds for sale it is often helpful to say upfront how sure you are of the identification or wether you are just guessing. There are a lot of varieties of Eugenia Uniflora out there and they can be very different looking from one another. Some of them are reportedly very good!

So, I'm trying this for the first time tonight. Observational notes:

1) Raw leaf: too strong for me to eat in a salad or whatnot.  Maybe cooked in some dishes with other strong flavours.

2) Tea taste (I used 5 large P. edulis leaves in an oversized coffee mug of near-boiling water): the first taste I got was just "leaf".  Nothing else.  Kind of unappealing, but not distasteful... just uninteresting.  However,  the more I've been drinking it the more I've been picking up this subtle mint flavour that wasn't there in the beginning.

3) Either this was some crazy timing, or maybe I'm having a very strong psychosomatic effect..... OR, this stuff does exactly what it says on the tin.   I was only a quarter of the way into the mug when I noticed that I felt sleepy.  And not "normal sleepy"; but like something was actively dragging my awakeness level down.  Yet not of the type of effect to cause an imminent "fall asleep at my computer" effect.  I'll just put it this way, I don't think I'll have any trouble falling asleep tonight.    I also have this sort of heavy and/or tingly effect around my head.... maybe a very tiny bit of that feeling you get when you've had skin numbed for a medical procedure.  But again, not a strong feeling like that.

I definitely have to try this again to see if it's a coincidence or if this is a consistently reproduceble effect.  But so far, I have to say that I'm believing these reports.

Did you build the Vortex brewing system from scratch or you bought a kit?

If you built it from scratch can you send or post a parts list?

Thank You!