You need to find a reputable recipe that walks you through decarboxylation, cannabinoid conversion, and glandular breakdown in order to promote systemic bioavailability. Improper processing techniques are responsible for all the failed batches, and misleading dosage information. Improper processing is so prevalent, that many people assume you need more canna to achieve the desired effect when eating, than you do when smoking, and that simply isn't the case... unless there was a failure in the processing, in which case like eating a raw bud, it's not going to be nearly as effective or completely ineffective.
This photo tutorial will guide you through decarbing hash, and herb, as well as processing the converted cannabinoids into an oil. When done correctly, you need to be very careful and cautious with dosing; you have a much better chance of facing the 'room-spins', and spending the day bent over a bin or toilet from the intensity of the medication, than you have of eating some and it having no effect at all.
https://www.rollitup.org/cooking-cannabis/412878-badkats-cannapharm-canna-caps-uv.html
When your oil is a dark glossy brown, almost black, the conversion and breakdown is complete.
http://forum.grasscity.com/editpost.php?do=editpost&p=9734842
