Weed infusions are preparations in which the active ingredients of cannabis are transferred into a fat such as butter or oil. This infused butter or oil is the base for edibles – i.e., edible cannabis products.
How does a weed infusion work?
Cannabinoids like THC are fat-soluble. When cannabis is heated together with a fat, the active ingredients dissolve in the fat. The plant material is then filtered off, leaving behind an oil or butter enriched with active ingredients that can be used for cooking and baking.
Why is decarboxylation important?
Raw cannabis hardly produces the typical effect – the active ingredients are present in an inactive precursor form. Only through heating (decarboxylation) are they activated. When smoking, this happens automatically due to the heat; with infusions, this step must be consciously planned, otherwise, there will be no effect.
What should you look out for?
- Dosage – the effect of edibles is difficult to estimate and has a delayed onset.
- Patience – never re-dose prematurely, see Edibles.
- Safe storage – clearly labeled and out of reach of children and pets.
Frequently Asked Questions
Why butter or oil instead of water?
Because the active ingredients are fat-soluble and dissolve in fat, not in water.
What is decarboxylation?
The activation of active ingredients through heat – without this step, the effect remains weak.
Why are edibles made from infusions so difficult to dose?
Because the effect is delayed and can be more intense – start small and wait.
How long does infused butter last?
Refrigerated and airtight for some time – like normal butter, just enriched.

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