THC Deterioration In Cannabis Confectionery

source: medithrive

source: medithriveAbout six or seven weeks ago, I rediscovered a package of Cosmic Caramels tucked away in the refrigerator that had basically been sitting there for 2½ years. They worked just like they originally did; same effects, same strength, the whole bit. I’ve been slicing off pieces of the last caramel every week or so, as part of my general strain rotation.

The other day, I did the same thing, but suddenly nothing happened (or at least, almost too little to measure). The reliable little chunk I had been lopping off the end, which brought me to a cheery [4.5], was now giving me a mediocre and somewhat melancholy [1.5]. I put it down to a glitch, but then thought about it and tried a piece twice as big, which gave out with a half-hearted [2]. WTF?

So today, I took a look at the last remaining chunk, which was comparatively huge. At the rate the effects seemed to be deteriorating, I thought it was safe to eat the whole thing, even though a piece this size would usually be good for taking my whole family to visit the moon with me. I did notice (but forgot to take a picture of, dammit), that the caramel showed signs of sugar recrystallization (hard spots) in places, but looked otherwise just fine.

Well, I was right: I didn’t hallucinate or even get very high (maybe [6] or so). But I had the most peculiar fuzzy-headed feeling, and took a 2-hour nap. This is something I literally haven’t done in at least six months, and used to do all the time until 2011 (about six months after I started on MMJ).

My working hypothesis at this point is that opening and using this last piece exposed it to enough air that it started breaking down, and the process is not gradual but tends to happen all at once.

I’m pretty sure that most bud deteriorates fairly consistently (THC turns to CBN) over time, but this was an edible, so I’m guessing that it has to do with the food itself. As a control, I happen to have some other identical caramels that have been in the freezer all this time. I’ll be defrosting them one at a time for more experiments. Any volunteers? 🙂

Old Hippie is a father of two boys and thankfully living in California where all this kind of thing is legal. He started smoking marijuana in 1967 in high school, experimented with mind-expanding drugs of all kinds, and then straightened out 15 or so years later to become an airplane pilot. After being diagnosed with depression in 2000, he lost his job and most of the following decade to prescription medications (such as antidepressants) which sapped his energy and will. Finally, a chance conversation with a friend led to a doctor’s recommendation for medical marijuana (MMJ). This changed his entire life, health, and outlook for the better. is his continuing story. It’s also his way to provide experienced advice on using medical marijuana effectively and responsibly, as well as advocacy, activism, and support for others. Old Hippie teaches about safe use of cannabis edibles, Canna Caps, vaporizers, dosing, and even microdosing.


hey old hippie,
thanks for the great site. i make a little confection i like to call “fubar fudge” it’s canna-oil mixed with peanut butter and some powdered sugar, usually with some toasted coconut flakes mixed in, then topped with melted chocolate with some walnuts or pecans thrown on top. very easy to make. i pour it into a pyrex 13×9 lined with parchment paper and refrigerate until solid enough to cut into serving size. i put them in cellophane and freeze them. i swear they get more potent once frozen, but i’m probably just too high to tell. anyway, i’ve had some in the freezer for well over a year that i lost temporarily, and they were at least as potent as the fresher ones. btw i usually use ABV, or AVB, whichever you prefer, to make the canna-oil, with coconut oil. coconut oil works the best and tastes the best IMHO.

Sounds like it should work quite admirably! Do you have any quantities or ratios you can share for anyone wanting to try it? Thanks so much, and nugs and hugs!

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