im wondering if freebase dmt can be dissolve in hot water, and if it is insoluble in cold water

Freebase is pretty much insoluble in water, hot or cold. To dissolve DMT in water you would need a salt form like fumarate.

https://wiki.dmt-nexus.me/DMT#Chemical_and_physical_properties

thank you! ended up using dry acetone as a result of its insolubility

i guess i mis-heard that you can dissolve fb spice into hot caapi tea for ayahuasca? i'm pretty sure i read house saying it on here.

freebase spice should not have problem dissolving in caapi tea, as herbal teas are acidic by nature the spice would quickly form a salt upon contact.

i mixed my acidic brewed psychotria after filtering with my acidic brewed caapi after filtering and it precipitated something, it looked alot like a harmala extraction. one of the liquids was piping hot the other was cold.