Wrap the tofu in kitchen paper to remove excess moisture.
Blend tofu, honey, and lemon juice in a blender until smooth to make the cream.
Brew a strong cup of coffee and soak the castella or ladyfingers in the coffee.
Layer the coffee-soaked cake in a container, then top with tofu cream.
Repeat this process twice.
Finish by dusting cocoa powder over the top using a sieve.
Chill in the refrigerator before serving.