Van Linschoten referred to marijuana as "stamped." Simply eating a potted leaf doesn't have much effect. You could eat a large bud if you wanted, but many people choose to smoke the plant for added potency. The residue on the buds has a higher concentration of THC or Tetrahydrocannabinol. Having a dry mouth full of sticky, seedy, stem-filled marijuana buds isn't as effective as inhaling the burnt residue of THC. By eliminating residues, an even more potent blend is created. The simple method of crushing the sprouts and then adding them to food or drinks had changed by the 1960s. With the international trade of hashish from Morocco, the new method of THC extraction became widespread. Marijuana was first crushed or ground like in the old days, but now it was heated and compressed. The extract was so condensed that consumers got more THC in one puff of smoke. One hit of hash has the effects of smoking two joints of traditional marijuana. The increased potency also creates greater addiction. Withdrawal from hashish causes mood swings, irritability, insomnia and night sweats. Still in a natural form, now simply crumbled, but evolving the effect it has