Place tvorog in a mixing bowl and blend finely with a hand blender.
Add egg, softened butter, sugar, vanilla and salt and beat for 3 - 4 minutes until creamy.
Pour the tvorog mixture into a saucepan with a thick base and heat in a hot water bath, stirring constantly, until it reaches boiling point and becomes liquid.
Immediately afterwards, cool the tvorog mixture over ice water while stirring and chill for approx. 2 hours.
Whip cream until stiff and fold into the tvorog mixture.
Roughly stir fruit puree into the tvorog mixture so that it looks inhomogeneous.
Place the paskha mold in a deep plate with the smaller opening facing down and line it with a damp cheese cloth.
Pour the tvorog mixture into the mold, fold the ends of the cloth over it and weigh the mixture down with something.
Leave the Easter dessert to drain in the mold in the fridge for approx. 24 hours.
Turn the Tsar paskha out onto a plate, remove the mold and the cheese cloth and sprinkle with fruit powder.