Hello!

Is it normal that after staying overnight of yopo paste (water + mix of lime and seedpowder) the surface of paste turns black?

hm, I remember it turning kindof blue-gray from the lime... but not black? Once it's dry I would re-powder it and leave it for about a week, it seems to help with administering the snuff

Im not sure but possibly so.. Is your lime clean? Thats the only thing you have to worry about.. Once its dry it should become of a lighter color I think.

Are you thinking of extracting or using as a snuff?

Yeah, lime is clean - bought fresh from chemical store.
The aim is snuff.

Let us know if you get any decent effects or how it works for you!

Yes.

Tried first time about halfgramm - no visual effects, just headache.
And second time about gramm - just little subtle distortions.

Interesting is that before I used less lime (1:10) and cooked little bit different and from three times one time had success:

Trip:
At first the song named Baishui – 日落 played during all trip.
Also I had strong intension to get the effects.
I sniffed, then some pain in the head and discomfort - and then I layed down in dark room with closed eyes and began viewing at first pictures,
pieces of them moved and shifted in some geometrical manner:
- for exampleimagine smth seemed like white sheet of paper but really it is cut in pieces and these pieces are on dark table, and then pieces shifted and you see at first trunk of the tree; then branches appear,trunk still grows; then branches of branches appear etc. . But it was not deep fractal -
Then I saw pictures, rather beautiful, and I could somehow control what will be next - my imagination was improved.
After about an hour it came to end.

So I just took threshold dose and will hardly sniff more so thinking of the extraction.