How to make
Dissolve the baking soda in the yoghurt until well bubbled, then stir with the remaining ingredients. Stir with a spatula until you get a smooth but slightly sticky dough.
With oiled hands, shape small buns and arrange them in a tray with baking paper.
Add a small piece of butter on top of each bun.
Bake the buns in a preheated 390°F (200 °C) oven.