Anyone here decarb in a mason jar in the oven?

Discussion in 'Cooking With Cannabis' started by madcuzbad, Aug 26, 2017.


    madcuzbad Member

    The jar shouldn't crack and it shouldn't smell too bad right?
    Fender Guitar

    Fender Guitar Active Member

    I decarb on a cookie sheet but mason jars should work fine.

    Nugachino Well-Known Member

    Depends if those jars are heatproof at the Temps you'd decarb at.
    Indacouch and Fender Guitar like this.

    Deathpack Member

    I've seen people do this before. also have seen some even cook their material inside a sealed mason jar dropped into boiling water. This really all depends on the quality of the glass, the cook time, and how much of a daredevil you are haha.... with heat and gases, pressure could build up and cause trouble if you don't take the right precautions.....

    If you are worried about the smell, try to looking up different ways to decarb without an oven.. there are many ways to do so , even by using heavy duty sealer bags and boiling water.... the possibilities are endless..

    Hope this helps,


    chemphlegm and greg nr like this.

    ANC Well-Known Member

    Just cook some stinky curry at the same time.
    GroErr, Creature1969 and Nugachino like this.

    Nugachino Well-Known Member

    Make a fish dish.
    Indacouch likes this.

    ANC Well-Known Member

    Thing I hate cooking the most, san pedro or peruvian torch. It smells like all vegetables mixed into one flavor. Abominable.

    Nugachino Well-Known Member

    greg nr

    greg nr Well-Known Member

    You are in essence creating a glass pressure cooker. What could go wrong?

    When canning food in a mason jar, the lid is not on tight; gases can escape. When you take the heat away the vapors in the jar cool and create a vacuum sucking the lid on tight.

    It's not the heat you have to worry about, it's the pressure. You need some way to let it escape above a certain level. The vacuum sealed bag in boiling water is a much better option. If it over pressurizes and you don't catch it, it will just put a tear in the bag. No flying glass.
    Indacouch, chemphlegm and Nugachino like this.

    Creature1969 Well-Known Member

    If you're that worried about odor, there's an expensive little appliance that will decarb up to an oz at a time in under an hour with zero odor. "ardent Lift".

    I can vouch that's it's wayyy over priced but it does work as advertised.
    chemphlegm and greg nr like this.

    HeatlessBBQ Well-Known Member


    I decarb My twim at 220-250 degrees F for 15- 21 minutes.

    It will always smell good and never crack the jar.
    You should not keep the jar lid too tight. or You will crack the jar. :)


    swedsteven Well-Known Member

    Love to cook chocolat @220 20min 20170917_103616.jpg
    20170917_104151.jpg 20170917_103551.jpg 20170917_103540.jpg

    Indacouch Well-Known Member

    OP sounds explosive .....either way it should be entertaining ....don't forget pics please....
    Fogdog likes this.

    GrowGorilla Well-Known Member

    I think it's easier on a cookie sheet but should be okay in a mason jar.

    Fogdog Well-Known Member

    Regarding putting weed into a mason jar to decarb. Greg nr is quite right. A lot of Carbon dioxide gas is given off. That, in addition to expansion of air in the jar makes the whole thing a Darwin award in the making. Loosely covered jars are probably safe but don't seal the thing tightly.

    I've been using a vacuum sealed bag in nearly boiling water and finding good results. I didn't even have to dry my harvest before doing so. I cut up fresh buds from my harvest, sealed in plastic bags and used an immersion heater to hold water temp at 203 F (95C). Significant expansion in the bag due to CO2 that is a product of the decarb reaction. The bags have to be weighted down. Two hours at 95C is long enough to get the job done with the side benefit of less degradation of THC and better control of the overall reaction.

    A test sample of fresh bud was dried in the oven to find out % water in the bud, which came out to about 25% dry matter/75% water

    Once decarb is done, the bags are opened and wet decarbed bud is transferred to a jar and 500 grams of melted coco oil is poured over all. I use 100 grams wet bud/500 grams of oil (roughly 4 ounces per pound of oil or 1 ounce dry matter/pound of oil). Mason jars are sealed and go back into a water bath held at 190 F (88 C). Extraction time in coco oil is 2 hours at 88 C.

    Oil is separated using a french press to get most of the oil off. I use an old orange juice-press to squeeze out the last bit of oil from the bud. A little water comes out of this, so I let it cool and remove the oil cake from the last bit of water. This very last step isn't very important -- it's a very small amount of water, I'm just fussy after all the time spent to get to this point.

    I've made plenty of canna oil using the conventional 240 F/30 minute oven decarb method and I think the boil-in bag decarb method gives me better results. I've done side-by side tests and subjective comparisons of the highs from each tilts me to boil-in bag decarb. Less smell too.

    madcuzbad Member

    Never would have thought of sous-vide, that's perfect.
    Fogdog likes this.

    Tejashidrow Active Member

    You can decarb in a mason jar
    ( a jar mad specify for canning, not what spaghetti sauce comes in..,)
    It is made for temps up to 400 degrees plus.
    In boiling water. ( 90-120 minutes)
    I get a big pot put a washcloth in the bottom and bring water boiling .Put Erb in mason jar WITH lid on works great.
    Can also do the mason jar in oven thing.
    These jars are made for heat they will not implode.....

    Tejashidrow Active Member

    You will not crack a mason jar from a tight lid.
    HeatlessBBQ likes this.

    Tejashidrow Active Member

    Yes if boiling or oven put lid on tight.
    The only way a mason jar will explode is if you let the water boil dry or have the oven over 400 degrees for a hours.
    Then only if you have enough liquid in it that turns to steam that creates excess pressure.
    But I am going to guess your weeds not sopping wet, riiiiiiight???
    HeatlessBBQ likes this.
    greg nr

    greg nr Well-Known Member

    Implosion isn't he concern. Explosion is the concern. Steam can and will create a lot of pressure inside the jar. Maybe the jar will contain it. But if it doesn't, you have glass shrapnel.

    Not a safe practice. Even a pressure cooker or water heater will explode if you defeat the safety release. Just google myth busters water heater to see what can happen.

    Bad advice to recommend putting a sealed glass jar in an oven. Sorry.

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