I am going to try making wasabi peas despite a dearth of recipes online. I've read the list of ingredients of several brands, most (including my favorite) contain glutinous rice flour. Others contain rice flour, still others only tapioca and/or corn starch.
My favorite wasabi peas have a very crunchy coating that really looks like it should contain egg whites, but doesn't. Wasabi Peas I've never achieved a coating like that on anything using any starch I'm familiar with, so I'm wondering if glutinous rice flour is key?