Put ¾ c water in small pan and bring to a simmer.

Put all ingredients (from the tofu down to the sugar) in blender.

Add remaining water and blend.

Mix cornstarch with 3 Tbsp water and quickly pour into the simmering water, stirring until water returns to a simmer.

Immediately, pour the water/cornstarch mixture into blender and process everything until very smooth. Pour into glass jar or bowl. 

Chill to firm up.