1. melt light butter in a small saucepan, but do not let it brown.
Sift flour, salt and cream of tartar baking powder into a suitable bowl. Add liquid light butter and kefir and knead together with mixer dough hooks at the beginning, then with hands to form a soft dough.
Form the dough into a round loaf with floured hands. While doing this, tear the surface apart slightly, this will create a nice crust. Place bread on a baking sheet lined with parchment paper. 4.
4. bake in the heated oven at 200 °C, convection oven 180 °C, gas mark 4 on the lowest shelf for 35-40 minutes until golden brown.