Add water to a bowl and sprinkle powdered gelatin over it to bloom.

In another bowl, crack the egg and mix it. Add sugar and stir until combined.

Add tofu to the egg mixture and mash it while whisking until smooth.

In a small saucepan, combine the tofu mixture and milk. Heat over medium-low heat while stirring until just before boiling. Remove from heat and add bloomed gelatin and vanilla essence, stirring to dissolve.

Strain the mixture into heatproof containers. Divide evenly into serving dishes and refrigerate for about 1 hour until set.