Combine all ingredients and knead.

Place bag in a bowl of warm water and let rise for 30 minutes.

Add 1/4 cup of flour.

Let rise for 1 hour out of the warm water.

Remove dough from bag and divide into 3 equal portions.

Roll into strips and plait.

Brush with butter and sprinkle with sesame seeds.

Bake at 300°F/150°C for 40 minutes.