Week Three: Dosage Formula ( Updated )
Here’s how to do it:
1 gram of cannabis = 1000 milligrams
10% of 1000 milligrams is 100 milligrams
This means that assuming we are using “average” marijuana, one gram of cannabis contains 100 milligrams of THC.
Are you with me so far?
Next, let’s calculate how many milligrams are in a batch of marijuana butter.
As an example, let’s say I used one ounce (equaling 28 grams) of average quality marijuana to make one cup of butter. That would mean 2800 milligrams of THC went into that one cup of butter.
Moving on, the amount of THC in a given recipe will depend on the amount of butter used.
If I used 1/2 cup of that butter to make a batch of 36 cookies, then the entire batch would contain 1400 milligrams. Divide 1400 mg by the number of servings, in this case, 36, to determine that each cookie will contain about 38.8 milligrams of THC.
To recap, first you need to estimate the percentage of THC in your plant material (or use the numbers from the lab test) and divide that into 1000 to get the per milligram amount.
Next, calculate the number of milligrams in your infusion and in the amount of infusion you will use to make your recipe. Divide that by the number of servings your recipe makes, and you will know the per serving dose.
You can use this formula to create recipes that always ensure you are delivering a THC dose that meets your needs.
If you find a given recipe delivers too strong of a dose, cut the amount of cannabutter or oil and dilute with regular butter or oil to make up the difference. Cookies not strong enough? Add more THC to your recipe with some decarboxylated kief, hash or hash oil.