I've made tincs a couple times, and i've always had really good luck with them. I've found it best to use 1oz GOOD medicine to 1 cup (8fl. oz.) of Food Grade Glycerin. If you don't want to use that much, cut the recipe in half, 1/2 oz bud to 4oz glycerin. 1/4=2oz 1/8=1oz. You can get glycerin at...