1. Soak gelatin in water and heat it in a microwave oven (500W) for about 30 seconds without wrapping to dissolve it.
2. Put sugar and about 1/4 of tofu in a bowl and mix so that no lumps remain. Add the remaining tofu in 3 portions and mix well each time. Add milk little by little, mix until smooth each time, add gelatin solution of 1. and strain with a fine-mesh strainer.
3. Pour into small glass containers and chill in the refrigerator for at least 3 hours to harden. When it hardens, sprinkle brown sugar umeshu.