Homemade weed hard candy potency comes down to one number: total milligrams of decarbed THC in the batch divided by the number of finished pieces. Most home cooks land 20 to 40 percent below their own math, because decarboxylation is incomplete, hard-crack sugar syrup degrades cannabinoids, and some of the mix never leaves the pan. Store-bought candy avoids that gap, which is a big reason convenience now decides what people buy.
How do you calculate THC per piece of hard candy?
Start with the weight of decarbed flower and its labeled THC percentage. Multiply grams by 1,000 to get milligrams, then multiply by the THC percentage as a decimal, then apply a decarb efficiency factor of 0.70 to 0.90. Divide the result by your finished piece count.
- 3 grams of flower at 20 percent THC equals 600 mg of potential THC.
- 600 mg times 0.80 decarb efficiency equals 480 mg available THC.
- 480 mg divided by 60 candies equals 8 mg per piece before cooking losses.
Then subtract losses. Oil left on the spatula, syrup stuck to the thermometer, and the un-poured tail of the batch all take a cut.
Why does hard candy lose more potency than brownies?
Hard crack stage sits at 300 to 310 degrees Fahrenheit, and cannabinoids degrade far below that. If your infused oil goes into the pot at the start, a meaningful share of THC cooks off before you pour. Baked goods never see those temperatures, so fat-based edibles usually finish closer to their calculated dose.
How much THC does decarboxylation actually convert?
Raw flower holds THCA, which has no psychoactive effect until heat converts it to THC. A common home method is 240 degrees Fahrenheit for 40 minutes, and published conversion efficiency typically runs 70 to 90 percent. Under-decarbing is the single largest source of lost potency in homemade candy.
How do you keep the infusion from separating?
Sugar and fat do not bond, so plain infused oil floats and leaves some pieces weak and others strong. Options that work:
- Use a reduced alcohol tincture and stir it in after the syrup drops off the heat.
- Add sunflower lecithin as an emulsifier at roughly 1 percent of batch weight.
- Stir continuously from the moment the infusion goes in until the pour is finished.
- Pour into a mold you can fill fast, so the mix never sits and stratifies.
Can you verify potency without a lab?
No home method measures THC content accurately. You can mail a sample to a testing lab for roughly 50 to 100 dollars, and that is the only way to know your real number. Otherwise, keep the recipe identical every time and treat your calculation as an estimate with a wide margin.
What is a reasonable dose per piece?
Regulated markets cap edibles near 10 mg of THC per serving, and beginners usually start at 2.5 to 5 mg. Because homemade candy varies piece to piece, cut your first batch into smaller portions than you think you need. Wait two hours before judging the effect.
Is store-bought candy more predictable?
Yes. Licensed producers test each batch and label THC within tight tolerances, so the number on the package is close to what you get. That reliability, not flavor or price, is what pushes most casual users toward the dispensary shelf.