Warm the buttermilk very gently in the microwave. Put all ingredients in a bowl, knead into an elastic dough, possibly add more flour or a few additional tablespoons of milk. Let rise for about 30 minutes.
Knead again briefly, put in a greased loaf pan and let rise for another 40-60 minutes until the volume has almost doubled. During the resting time, preheat the oven to 220 ° C.
Place an ovenproof dish with water on the bottom of the oven and reduce the temperature to 190 ° C. Bake the bread for about 35 - 40 minutes. The bread also tastes delicious as toast!