Why green tea you asked? It's simply because I adore the Redman green tea powder, it's so fragrant and make your baked good vibrant in this beautiful green color. I made sure I bought some when I went back to Malaysia few months ago. There is no substitution for me! Not disappointed, my house smelled like green tea when this was baked and this mochi cake really fragrant packed with green tea smell. If you just want a plain matcha mochi cake, just omit the sweet potatoes.
The texture of this mochi cake is sticky and chewy with the fragrant of green tea and sweetness from the sweet potatoes. My next experiment will be with taro mochi cake, wait til I get my hands on some taro!