It is so interesting to me that mucuna powder that we have bought "bulk" tastes so awful, but the mucuna beans that you grow and harvest yourself/ steam & freeze have no more taste than butter and are actually pleasant to chew. I was just reading a past home page from Ken Allan in Canada and he mentions a bush mucuna that I would like to try. The ones I have and have had goood luck saving seeds for the next year with grow really tall. I have to grow strong , tall field corn for them to use as poles...then I use the field corn for my chickens, but I'd love to try bush mucunas.
I cannot pull- start our weedeater unless I have indulged myself in a mucuna ball to
quicken and strengthen my "pull"...but it it is really cool to be able to start it myself now.

There is an herb vendor with quality mucuna that tastes like you described, not much of a taste at all, not even nutty really. In my experience the different tastes come from Mucuna that comes from the wild and has been left to ferment on the vine before being harvested. The mucuna this individual supplies is grown on a US farm using organic methods. The website is meridian botanicals, the mucuna that is US grown is called
'Mucuna pruriens var. Deeringiana'

It is the black and white mottled large bean variety.

This individual also has a few different 'herbal formulations' that utilize Mucuna and an AADC inhibitor (EGCG), the site owners fascination with Mucuna stems from his goal of liberating former drug users, of which Mucuna seems to be a choice candidate. I am sure he would not mind in the slightest offering his support to those with legitimate therapeutic needs outside of rehabilitation.

- A dabbler in pharmacology who happens to read this forum & love herbs, especially Mucuna!!!