Q: What is hash?
A:"Hashish" or "hash" is the name given to an agglomeration of the capitate-stalked glandular trichomes (the resin glands or "crystals") of the cannabis plant. These resin glands contain the highest concentration of cannabinoids to be found anywhere on the plant. Hashish generally takes the form of a brownish solid, which can range in texture from soft and malleable to hard and brittle or fluffy and crumbly. It is a concentrated form of cannabis.
Q: What is hash oil?
A: "Hash oil" is a concentrated extract of cannabis that is made chemically, rather than physically. It is a liquid that can be runny or thick, black or golden, depending on a number of factors. It can be extremely strong.
Q: How can I make hash?
A: The first hash was made by hand-rubbing. You are unlikely to want to use this labour-intensive, inefficient method. You can choose to make sieved hash or water-extracted hash. Most Western hashmakers use the water method. This results in high yields of a very potent product. However, the water washes away much of the flavour of the hash.
Q: How can I make hash oil?
A: You expose the cannabis to a solvent, then evaporate the solvent. That's it, in principle. There are many ways to make hash oil; BHO and QWISO are the most common, with BHO generally being considered a superior product.
Q: What can I make hash from?
A: Hand-rubbed hash is made from living plants. Sieved hash is generally made from flowers ("buds"). Water-extracted hash and hash oil can be made from pretty much any cannabis material, including trim that would otherwise be disposed of.
Q: So, I have to choose one of these methods?
A: Not necessarily. There is nothing stopping you from making some sieved hash, using the same cannabis to make water-hash, and then re-using it to make oil from.
Q: Why would I want to do this?
A: Some people (myself included) just prefer smoking hash to cannabis. It has a different flavour, and can have a different effect profile. Some people want something more potent than weed; Grade A bubblehash or BHO certainly fulfil this requirement. Some people (usually growers) want to make use of trim that would otherwise be thrown away.
Q: Is it difficult?