Avocado pit exhaust?
I'm tannining a batch of cotton with avocado pits in preparation for dyeing them in cochineal (I'll also mordant them with alum).
When I strain the tannin bath — is there any further use for the pits? does a several-hour soak in hot water extract all the tannins, or can I reuse them?
And actually, while I'm here: I usually use gallnut powder to tannin my cellulose fibers, and I always feel SO wasteful tossing the exhaust. Has anyone found good uses for it? I hesitate to reuse the bath to tannin more fiber, because I don't want my dye to not stick to it! But I just hate throwing things out before they're truly exhausted.
Would love to hear what your dye practices look like!