Add the baking soda to the jam and stir.
In a separate container, beat the eggs with the sugar, oil, yoghurt and the flour sifted with the baking powder.
Add the jam at the end, pour the mixture into a buttered and floured tray and bake at 356°F (180 °C) until your toothpick comes out clean when inserted.
Sprinkle with powdered sugar. Bon appetit!