Roasting the seeds in a heavy-based pan with constant stirring is what I've tried. Let your nose be your guide, exact timings will be in low single figure minutes at the most.
As for the taste, it's still Peganum harmala but it tastes a bit more nutty.
Some science somewhere showed searing seeds slightly shrinks substance salvage size (sorry)
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βThere is a way of manipulating matter and energy so as to produce what modern scientists call 'a field of force'. The field acts on the observer and puts him in a privileged position vis-à-vis the universe. From this position he has access to the realities which are ordinarily hidden from us by time and space, matter and energy. This is what we call the Great Work."
β Jacques Bergier, quoting Fulcanelli