(i posted this in another THC Drop Post but its helpful)

Thc drops? Soak weed for about 4 in a half weeks with grain alcohol or food glycerin in a jar and shake it, when you add the recipe of weed and grain/glycerin then you shake it and let it sit for the time..The dosage is One cup of The Grain/Glycerine and One Ounce of some high grade bud in a quart jar for best results and make sure it is sealed tight. Use a Food Presser to press out the glycerin and bud well and put the liquid in bottles with a eye dropper top or somethin' like it.... enjoy

peace