There is no one answer to what constitutes a “decent edible.” If it made you feel good and you were happy with the amount you felt, then it was a decent edible. Doing a calculation based upon marijuana containing 20% THC, your half cup of oil likely contains about 750mg THC. Divide that by the number of cookies to get an approximate per cookie dose. (The government says average weed is 10%, since you have what I assume is good Hawaiian, I figured it at 20%).
During Saturday's class, Charley Wheelock, the chocolate maker who taught Sugar High with Hukill, gave students a brief history of chocolate before diving deep into his passion for infused goodies. He initially got some flak from other chocolate makers when he said he wanted to partner with Serra. But pot culture is here for the long-term, and he’s determined that his kitchen be at the forefront of that movement.