You could try putting some buds in rum, boil it, then strain. It needs to be a pretty fine strainer, unless you want to eat flower. It’ll become green, but that can’t be helped unless you find some or make some sort of extract.
It’s called a cannabis tincture, or, colloquially, green dragon. I made some with Everclear like the insane fox-hyena thing that I am. Anyways, good luck.