A large, closable container and ice and water. Throw your chopped and diced smoke into said container with ice and water. Shake vigorously non stop for 15-20 min. Let stand. All the crystals will accumulate on the bottom of the container. Now, the difficult part. Obtaining the crystals from the bottom of your container without causing it to mix back in with the water. A Lil patience is required. But, for me, its the easiest and safest way I've ever seen.