I soaked a 1/2 oz of Mexi dirt weed in 190 for 5 months. Poured it through a strainer in to a measuring cup, covered it with a paper towel to keep out dirt and bugs and let it evaporate in my garage. Left a greenish/blackish goo that I divided into baby aspirin sized pieces.
Smoked some in a pipe.
Kneaded some with weed and rolled it up.
Ate some.

For weed that was very harsh and boring to smoke this concentrated form was quite enjoyable. I would love to try the same experiment with some high end weed.