This recipe was passed down for generations amongst the Japanese living in the States. You can enjoy crispy(the outside) and gooey (the inside) texture at once and must like this! I also like to bake with a little bit of green tea powder. It gives a lovely flavour and colour to your cake :) I used homemade azuki red bean paste(check my recipe!), and I don't make this cake very sweet. If you have a sweet tooth, adjust sugar amount as you desire. Canned bean paste also works well. It's usually very sweet.