When you purchase CBD (or THC) flower from a dispensary, there will be several strains available to you, each with varying levels of potency. Look for the percentage associated with the strain you choose. My recipe calls for 1/4 oz (or ~7g) of flower for the batch. The numbers you will need to calculate the dosage of your gummies are: percentage of CBD (THC) in your strain, amount (in ounces or grams) of flower used in your batch, and the number of pieces you end up with.* While you can certainly go about reverse engineering the dosage yourself from here, there are several calculators out there to help you do the job. I happen to like this one. *Depending on the type of mould you choose, your homemade gummies (or other edibles) are going to range in size. I used these moulds, which yielded me a batch of approximately 300 gummy bears. Note:you will need 6 trays to make a full batch, and these moulds are sold in cases of 4.