Rolling a joint with hash is a potent way to get a double dose of cannabis. To roll a joint with hash, first prepare the amount of weed you normally would for a joint, along with a paper and filter. Then take a small amount of hash, about the size of a tic-tac, hold it in the palm of your hand and lightly heat it with a lighter until it properly softens and can be crumbled over the weed.
You can also try “cooking” it by placing it in a thimble-sized bowl of aluminum foil which you then heat with a lighter until it smokes. If you’re using particularly sticky hashish or jarras, you can also roll the hash between your hands until you make a long, thin strip that you then place in the basin of the paper with the cannabis. Think of how you would make a Play-Doh “snake” when you were a kid.