I was using bubble hash for tincture, but just didn't like it, combination of convenience, taste, the VG was weird... I like the capsules for edible and have met people who prefer tinctures who suggested that I place it under the tongue to help with the issues I was having. The caps are my preferred way for sure, but it took me 5 years to get here after playing with strains and dosages. That first 1 gram evening was entertaining.
When siphoning the alcohol into jugs I could taste the stuff and would agree that it really wouldn't be good in a tincture. The extracted oil is awesome, solvent free after decarbing at 240F and as sterile as it needs to be for encapsulation and storage. When I make a batch, a dozen or so go into a jar for my desk (testing) and the rest get put into a jar in the freezer. Some of the capsules from 5 years ago were still the same when I tried them recently. I changed but the caps were the same.
My plan for kief is to attach a 73u screen with a big rubber band to a 1 gallon beverage cooler and put in dry ice with crushed bud and shake over a mirror. May wash the remaining buds with alcohol if anything is left, what do you think, worth doing?