We tasted these in Japan at several fairs and they were heavenly each time. I haven't tried this recipe but it looks fairly authentic. It comes from the "Joy of Japanese Cooking" book. Aside from bean paste, these waffles are commonly sold with a creamy custard filling, which was my favourite. Unfortunately, the amount of bean paste given is not specific so you will have to make an educated guess. It just depends on how full you want your waffles.