1. In a microwave-safe bowl, combine the 1 cup glutinous rice flour, tapioca starch, and sugar.
2. Add water or rice wine gradually, mixing until a smooth batter forms.
3. Color the mixture white or pink by adding food coloring to match Baymax’s appearance.
4. Microwave the mixture on high for about 1 minute, then stir well. Repeat until the dough becomes sticky and translucent.

1. Dust your work surface with cornstarch to prevent sticking.
2. Transfer the hot mochi dough onto the surface and knead gently to cool slightly.
3. Divide the dough into small, equal-sized pieces.
4. Flatten each piece and add a spoonful of red bean paste or custard in the center.
5. Pinch the edges together to enclose the filling, shaping into a round ball.

For a realistic Baymax look, you can use edible markers or small candy eyes to add facial features. To store leftovers, see the storage tips section. Enjoy your homemade Baymax mochi inspired by San Fransokyo food!