Mix the yeast with part of the warmed milk, a little sugar and flour. Allow it to activate for 20-30 minutes. Heat the butter or lard with the oil. Knead a soft dough by adding flour to the yeast, butter, eggs, salt, the remaining sugar, baking soda, dissolved in yoghurt and finally the desired flavors.
Leave the ready kneaded dough in a warm place until nicely risen. Then divide it into 2 parts. Each part is in turn divided into 3 balls, which are shaped into oblong pieces and weaved into a braid. Optionally you can put nuts and raisins in between.
You can prepare 1 large, instead of 2 smaller cozonac pitas. Beat the egg yolks with a little oil and brush the tops. Leave to rise again for 30 minutes and insert in an oven, heated to 392°F (200 °C), to bake until ready. Put oil on top.