Get a nice little pint or smaller jar (baby food jar size works)
Put your leaf matter, buds, what ever or whatever in it. Full is Ok, but packed is too much.
Put it in freezer.
Get bottle of everclear or 90% or higher ISO
Put in freezer also.
Wait a few hours at least.
Prepare two paper coffee filters by wetting with water, squeeze as much out as possible, and place them in a funnel or strainer. (The flat bottomed metal screen coffee filters work good for this)
Place this over flat shallow glass baking pan.
Take herb filled jar and alcohol out of freezer.
Pour alcohol into jar just covering herbs.
Put lid on and shake the hell out of it for 30-45 seconds.
Carefully pour contents through filters and allow to drip through filters into shallow bake pan.
Gently squeeze coffee filters to claim all alcohol.
You can either allow the alcohol to evaporate naturally, or have a fan gently blow across it to increase speed of evaporation or place on heating pad.
Once the alcohol has evaporated, you will have residue left on the glass.
This is your hash.
It may be shatter, it may be powdery, or it may be oily.
Carefully scrap with razor.
Enjoy.