In a large bowl, combine flour, sugar, baking soda, salt, cinnamon, and cardamom.
Beat the egg in a small bowl, add the yoghurt and water. Whisk till combined
Melt the butter in a saucepan
Add the egg-mixture and butter to the bowl with flour and stir till even
Chop the chocolate and add it to the dough - stir till combined
Put dough on a lightly floured kitchen top, and knead briefly. Roll dough into a 3-5 cm thick sausage. Cut into 12 pieces, and place on the prepared baking sheet.
Bake in the middle of the oven at 200 degrees C for 15 min till the scones turn golden