Cultivation: Moroccan hash oil is made from unpressed resin.
Production(Self instruction): Use the smallest alcohol molecule, methanol, to perform a cold solvent extraction. The resin needs only to be soaked for an hour or two with a stir or three; wash the resin three times with at least a 4:1 ratio of methanol to resin, condensing the methanol driven off by heat from the filtered mixture each time.
Boil down to a 1:1 ratio and after the third wash set fire to it, immediately give this a final methanol wash, fire it again; the flames will subside on their own, if your resin was pure, and your filter papers were fine, and then it will bubble up to the top of your pressure cooker; it is now super-hot (close all the windows) will cool slowly but needs to be poured to easily separate the crust which can be recycled.
Big warnings: methanol will rot your brain and send you blind if you regularly inhale (luckily good hash oil contains none) and methanol fires are deceptively fierce, you need good practical chemistry lab habits. Incidentally, the washed residue looks exactly like hash still, but will not get you stoned at all (guess what happens to that!)
Color: Dark brown as unwarmed solid, yellow and brown on rizla paper.
Smell: Very little, slightly toasted; if it smells strongly of anything, just say no.
Taste: Slightly acrid, not pleasant unless disguised.
Consistency: When frozen will shatter; at room temperature is solid but sticky; will drip from spatula when heated gently, quickly solidifies to sticky solid again.
Effect: Same as the hash you made it from, but will not deteriorate as quickly with time.
Potency: Again, same as the resin you used, though the oil is clearly more concentrated so less equivalent oil is needed than the original hash.
Availability: there's always resin in Morocco, but users need to love it to handle it with total success. This is the combustible that will be used in medical inhalers because it contains at least 75% less vegetable matter.