How to Make Cannabis Edibles (Decarb First)

Edibles are a different department from smoking, and they have one make-or-break step that beginners miss: you have to activate the cannabis with heat before you cook with it. Get that wrong and nothing happens; get the dosing wrong and you have a very long night. Here’s how to do both right.

The short version:

• Raw cannabis is basically inert in food — you must decarboxylate it first
• Decarb: ground flower/kief/trim on a tray, 120°C for ~30 minutes
• Then infuse into fat (cannabutter/coconut oil) or alcohol (tincture)
• Homemade edibles can’t be dosed precisely — start low, wait long
• Edibles hit harder, last longer, and take longer to arrive than smoking

Want the full breakdown? Keep scrolling.

Why do I have to decarb?

Because the trichomes contain THCA, not THC — and that “A” matters. THCA isn’t psychoactive; eaten raw it passes through and does very little. When you smoke or vaporise, the heat converts THCA to THC instantly (decarboxylation happening in the flame). Eat raw cannabis and that conversion never happened. The Baker grinds raw flower into brownie mix, eats one, feels nothing, eats five more, and wakes at 3am convinced his heart stopped — while his mate, who made proper cannabutter, ate half a square and was fine. To decarb: spread ground flower, kief or trim on a parchment-lined tray and bake at 120°C for about 30 minutes until it turns golden-brown. Fair warning — the kitchen will smell like a grow tent left in the sun, so the neighbours will know; plan accordingly. After decarbing, it’s activated and ready to infuse.

How do I make cannabutter or a tincture?

Cannabutter is the forgiving gateway. Melt 450g unsalted butter with a cup of water (the water stops scorching and separates out later), add your decarbed cannabis (a starting ratio of about 28g flower per 450g butter, less for kief/trim), and simmer on the lowest heat 2–3 hours — a bare simmer, not a boil — stirring occasionally. Strain through cheesecloth, squeeze it out, refrigerate overnight, then peel the solid butter off the water. Use it anywhere you’d use butter; coconut oil substitutes one-for-one for a dairy-free version. Tinctures soak decarbed cannabis in high-proof alcohol — in Ireland that means Polish Spirytus (95%) rather than Everclear (not sold here), or food-grade ethanol; shake daily, strain after two to four weeks, and dose under the tongue or in a drink. A non-alcohol vegetable glycerin version is weaker but works (strain after four to six weeks). Store finished infusions in airtight, UV-resistant jars (DIG stock them).

How do I dose homemade edibles safely?

You can’t dose them precisely without a lab, and you don’t have one — every batch varies with the starting material, the decarb, the fat content and the size of the piece. So the rule is start low, wait long: cut a small piece — a bit of a square, not a whole one — eat it, and wait two full hours, not one. The delay before it kicks in is the trap that catches everyone; the Baker ate six because the first three hadn’t hit yet, then they all hit at once. Edibles arrive slower, hit harder and last longer than smoking, so you can always eat more but you can’t un-eat it. Treat an unknown-strength homemade edible like exactly that. (Two non-flavour notes: label and store edibles away from children and pets like medicine — a tray of cannabis brownies looks just like ordinary brownies; and tincture alcohol at 95% is genuinely flammable, so keep it well away from the hob and any flame.)

FAQ

Why do I need to decarb cannabis for edibles? Raw cannabis contains THCA, which isn’t psychoactive when eaten. Heating it (decarboxylation) converts THCA to THC. Skip it and your edibles do almost nothing.

How do I decarb cannabis? Spread ground flower, kief or trim on a parchment-lined tray and bake at about 120°C for 30 minutes, until it turns golden-brown. Then it’s ready to infuse into butter, oil or alcohol.

How much homemade edible should I eat? A small piece, then wait two full hours before any more. Homemade batches can’t be dosed precisely, edibles take a long time to kick in, and you can’t undo eating too much.