Pressed hash is produced by compressing cannabis trichomes. To create this product, you can use a sieving method when materials are filtered through a mesh of variable gauges to crack the trichomes. Then the clammy, trichome-rich resin falls through the mesh.
Once the process is completed, the resulting product is commonly known as kief. Later, the kief can be hard-pressed in a pressed hash using force with high temperature to melt the trichomes collectively.