Someone did this before so I am going to try it. I used a hibiscus ๐บ tea and left it unattended for most of the year. So I wonder if it will taste any good.
It is so interesting to me the uses of "leftovers" or byproducts of brewing.
From our brewery ve give the yeasts away to somebody who makes cosmetic products from them (but not too often usually it ends up dumped in sewer). And used up malt ends up as animal feed loads of people want it for chickens, sheeps, goats, cows you name it.
I consume these byproducts when they go though some animal :-)
Sometimes we get some chicken (3,5 kg or so large from small farm not the 1kg ones), and few months ago I got whole lamb.