From traditional imported hash to solventless extracts such as rosin, here is how the different concentrates are made and how they differ.
Concentrates in general
A concentrate collects the resin from the cannabis plant into a smaller, stronger product. Coffeeshop menus often list several kinds, and the names can be confusing. This guide explains the main groups.
Traditional hash
The oldest method separates resin by hand or with sieves, and then presses it. The result is the classic hash brick or ball, often named after where it comes from. It is usually smoked in a joint or a pipe.
Ice-water hash
Also called bubble hash. Cannabis is stirred in ice water, and the resin glands are filtered out through mesh bags and then dried. Higher grades can be very clean and melt well when heated.
Rosin
Rosin is made by pressing flower, hash or dried resin under heat. No chemical solvents are used, which is why it is called solventless. It is usually soft, sticky and very potent.
Why solventless matters
Some extracts use chemical solvents. Solventless products avoid them, which many people prefer. Solvent-based extracts are not widely sold in coffeeshops in the Netherlands, so read the menu and ask staff if you are unsure how something was made.
Strength and use
- Concentrates are much stronger than flower, so start with a very small amount.
- They can be vaporised, or added to a joint or pipe. Ask staff for advice.
- Effects come on quickly and can be intense. Sit down and take your time.
Buying tips
- Ask how the product was made and where it comes from.
- Check the smell and appearance when possible.
- Compare prices, which vary a lot between styles.
Browse more in our hash guide.