Or, if you wanted to.. you could pour your Cold Water Extraction into one or more glass pie or brownie dishes to evaporate. (Depending how much water was used) Then to be sure not to loose any spice, do a couple boils of the mimosa with acv or a lemon & you could even let that evap.
Then... get a big plant bowl and store the mimosa leftovers so that you can make sculptures with it later...
This way you just store thee shiny deep red shards of mimosa tea the same way you would any spice extraction, in a glass airtight container, cool dark place, maybe the freezer or a cellar, place it in capsules or add water to rehydrate
side note, while in the process of my first 'real extraction', used this CWE method with boiled rue tea, jungle mimosa shards and cela + cappi leaves for my first quite potent changa experience. all placed into a brownie dish at room temp, twirled well and left 4 or 6 days to evaporate.. mmm changa I like full spectrum and try to do cwe before any boil everytime.
peace