I found an interesting article from an Argentinian Canna Magazine that details the trip of a journalist to a huge Paraguayan plantation. He added photos and descriptions of how the "weed" is harvested and handled/pressed. Apparently they are trying to say that no ammonia is added at the point of pressing, the actual wet weed that rots in the bricks, in the hot sun and the resulting mold is what causes the formation of ammonia and that nasty ammonia smell..
I'm still skeptical about some of the bricks I've seen tho, I wonder if some do add the ammonia or if it really all natural, you decide -
Ghetto presses- Note how they hollow out part of the tree to use a jack to press down on the wood! The old man also mentions that he lets the buds dry for a couple days to retain the aroma, but most greedy farmers press it wet for weight and that's what causes the nitrogen to form ammonia byproducts as the bricks rot..
At one point they say the smaller ones are a hybrid of some sort and the tall ones are "Brazilian" genetics..
I'm still skeptical about some of the bricks I've seen tho, I wonder if some do add the ammonia or if it really all natural, you decide -
Ghetto presses- Note how they hollow out part of the tree to use a jack to press down on the wood! The old man also mentions that he lets the buds dry for a couple days to retain the aroma, but most greedy farmers press it wet for weight and that's what causes the nitrogen to form ammonia byproducts as the bricks rot..
At one point they say the smaller ones are a hybrid of some sort and the tall ones are "Brazilian" genetics..