Brew 1/2 cup of coffee in a moka pot according to the manufacturer's instructions.
Preheat your oven to 350 degrees Fahrenheit.
In a mixing bowl, combine the sweet rice flour, mochiko flour, baking powder, and granulated sugar.
In a separate bowl, whisk together the condensed milk, brewed coffee, and vanilla extract until smooth.
Gradually add the wet mixture into the dry mixture, stirring until a smooth batter forms.
Pour the batter into a greased baking dish and bake for 45 minutes, or until golden brown on top.
Let the mochi cool before slicing it into bite-sized pieces.