I crush my chacruna/chaliponga by hand and then put it in a coffee grinder, which makes a fine powder. As I understand it powder is better because there is more surface area, which means the extraction goes faster.
If I was going to boil chacruna I'd do 3x30m simmers. I've read multiple times that this is all that is needed.
Vinegar (e.g. white wine vinegar 5%+ acitity) is reportedly better than lemon juice, since the taste of vinegar boils off. I didn't try citrus fruit myself, only vinegar.
I would boil down to 1 gulp rather than any particular consistency. E.g. 1 shot glass. I think most folks think it tastes disgusting, although I have seen one or two folks comment that they don't mind it.
I've never seen anybody positively recommend swallowing whole SR seeds (and a whole lot of posts advising not to). I am doing rue tonight and I got them down to a powder in a coffee grinder. I'm also going to brew them.
I'm a recent n00b to Aya as well, try reading my
experience log. Maybe you'll avoid some of the 'mistakes' I made.
Hope it helps, and good luck.
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