Van Linschoten called marijuana “stamped.” Just eating a pot leaf doesn't have much effect. You can eat a large bud if you want, but many people choose to smoke the plant for higher potency. The residue on the buds has a higher concentration of THC or tetrahydrocannabinol. Having a dry mouth full of sticky, gritty, stem-filled marijuana buds isn't as effective as inhaling the burnt THC residue. Removing the residue creates an even more potent concoction. The simple method of breaking the buds and then adding them to food or drinks changed in the 1960s. With the international trade in hashish from Morocco, the new way of extracting THC became widespread. The marijuana was first broken or crushed as in the old days, but now it was heated and compressed. The extract was so tightly condensed that users got more THC in a single puff of smoke. One hit of hash has the effects of smoking two joints of traditional marijuana. Higher potency also creates higher dependence. Withdrawal from hash causes mood swings, irritability, insomnia, and night sweats. Still in a natural form, now simply crushed, but the effect it has on