Thanks for the link StoneMeadow. Not sure where ya found it, but I'm hoping to find a lot more like it.

I have read that saturated fats like butter and coconut oil are more efficient than ethanol. Most people who casually make brownies use butter.

I have some of my own data to post. Anyone want to help me conduct a somewhat scientific study on this?

I always decarboyxlate my nugs before grinding them. I decarboxylate (THCA ---> THC) at 145 C (290 F) for 7 minutes. 25 minutes at 120 C (255 F) is probably the better choice in terms of taste, but I am impatient.

I always use coconut oil since it is the most saturated fat i can find. And it is healthier and less ethically-problematic than butter.

After I decarboxylate my nugs, I grind them to a fine powder and add it to the melted coconut oil in a glass bowl. I place the glass bowl in the oven. I have gotten good results baking the oil at 100 C (210 F) for 2 hours, stirring occasionally. I have also gotten good results using 150 C (300 F) for 45-60 minutes. I have also made firecrackers using 325 F for 25 minutes.

If taste is my priority, I always go with the 100 C for 2 hours, although I am not positive if this is enough time to extract all the goodies.

It is so difficult to control for quality of grass, personal tolerance, etc with these experiments.