Mochi Donut "Pon-de-ring"

Name: Mochi Donut "Pon-de-ring"
Prep time: 5 min
Cook time: 30 min
Total time: 35 min
Cuisine: Japanese
Ingredients: 100 g All purpose flour ((1/2 cup)); 80 g Tapioca starch ((10 tbsp) *1 ); 20 g Katakuriko (Potato Starch) ((2 tbsp) ); 2 g baking powder ((1/2 tsp) *2 ); 40 g sugar ((3 tbsp)); 1/4 tsp salt; 20 g beaten egg ((4 tsp)); 10 g melted butter ((5 tsp)); 160 g Tofu ( *3); 60 g Icing sugar ((1/4 cup)); 1 strawberry; 60 g Icing sugar ((1/4 cup)); 2 tbsp milk (*4 )