Sift flour loosely into a suitable bowl and mix with salt. Press a small well in the center, add sugar and dry yeast and stir with half the milk (milk should be lukewarm). Let it rest for about 15 minutes.
Then add butter and the remaining milk and knead into a smooth, firm dough. Let the dough rise again for 20 min.
After the resting time, knead the dough one more time and divide it into small pieces. Roll each of these into a ½ centimeter thick stick and place on a greased baking sheet. Rest the sticks another time in about 10 min, then brush with warm milk and sprinkle a little salt.
Bake the grissini in the heated oven at 220 °C until golden brown and cool before serving.