DYK about Japanese raindrop cake, or mizu shingen mocha? Its supposedly a variant of rice cake, originally made with pristine water from the Japanese Alps and solidified using granulated sugar, agar (a jelly like substance), and soybean powder. It's called a cake but it really isn't a cake at all. It's a translucent gelatin, that resembles a raindrop, served with a topping on one
side and syrup, on the other. It's now being served in US restaurants.