Hash is cannabis. The trichomes are separated from the plant material. Like Hipster said, it is concentrated and so more potent. I like the earthy taste of hash. There are several methods of making hash. I like bubble hash and so easy to make.
I love the bubble and the dry ice hash is second on my hash list...(hash, pressed keef) ran a batch of the dry and was pleasantly surprised...not to mention no dry time unlike the bubble hash...I wouldn't waste time on the dry ice method without a press...by the time it's pressed into hash pucks, it's all good.