I know you can take leaves, blend them up with ice until you have a chunky green blended beverage, pour it into a glass container and when it melts, most of the green shit will float to the top, there will also be a layer of stuff on the bottom with water in the middle. Scoop out the green floating stuff and discard, suction out the water w/ straw or turkey baster w/o disturbing sludge on the bottom. Use a paper towel or something to blot up water and you got some low grade hash. It worked for me but bubble bags work way WAY better. You can use a silk screen w/ fine mesh to make it medium grade.