Soak the ladyfingers in coffee and arrange them in a 26cm glass dish next to each other to form an even layer, or in individual bowls (4-6 bowls depending on the size and type).
In a mixer's bowl add the cream, sugar and Yoghurt, and beat well until fluffy.
Place the mixture on top of the ladyfingers.
Refrigerate the dessert for 3 hours.
Sprinkle with cocoa powder and serve.