So I just went to make qwiso using frozen nugs/leaf and frozen ISO (6 hours in the freezer for both). Then I did a 20 second wash, filtering through a fine ss sieve and then coffee filter.
The ISO didn't go yellow, if I hold it to the light it is yellowish green... I gave it another 10 seconds but didn't wanna go any longer. Will evap down tomorrow morning and see what comes... But any ideas?
The bud is gringo, a superskunk indica dominant hybrid. Thick with trichs, even on the leaves!
it early so if i miss something let me know...
i think it is because you froze you bud it is likely you need more than a 10 sec soak.... see the outside of a trichome is kinda like one of those wax soda bottles candies from back in the day if your familiar. so when you lower its overall temp and the temp of your solvent is decreased it takes longer for the waxes to be dissolved and thus leaves some of the oil you wish to collect behind leaving your wash "clearer"
now, another possibility might be the age/cure of your starting bud. if it is fresher... say well dried to 1 month old... you will likely end up collecting some residual chlorophyll with any polar solvent... evwn with an overuse of non-polar solvent will collect chlorophyll... which will turn your wash green...
continuing with the idea that perhaps the buds are what I like to call young buds... or they have not been cured for very long... this is where say all the chlorophyll has broken down.. but oxidation of thc-a has not yet occured. in this scenario your wash will be clear and your end concentrate will likely have a light buttery color as opposed to that honey brown.... not a bad thing for flavor chasers as it is heavily loaded with terpenes.
finally... strain can cause a color varience... darker strains tend to make darker oils... I notice sativas will some times make lighter oil and indicas darker.... but all the other factors you can work with. strain is strain...
so if you are working with your "usual" bud and got a different result its probably your technique that needs some fine tuning... if the bud is new but the tech is the same.... perhaps its strain or cure related....
hope that helpful and not confusing ... its early on shatterday an I gotta oil my pistons!