Mix the eggs with the salt and sugar. Add the yoghurt and baking soda and stir everything.
Melt the butter and add it to the mixture. Mix the flour with the baking powder and add it little by little to the dough, while stirring nonstop.
Pour the dough into an oven dish covered with baking paper and put the raspberries on top. Bake for 45 min. at 356°F (180 °C).