Lightly brown the butter at low heat. Pour into a bowl. Let it cool down until it is firm again. Cut the vanilla pod lengthwise and scrape out the pulp. Peel and grate the ginger, weigh 30 g
Cream butter, vanilla pulp, icing sugar and salt. Stir in 2/3 flour by the spoonful and ginger. Knead the rest of the flour into it
First form the dough into 4 rolls (approx. 3 cm Ø), then into squares. Brush with beaten egg white and turn in brown sugar. Chill for 3-4 hours
Cut the rolls into slices a good 1/2 cm thick. Place them with enough space on baking trays lined with baking paper. Bake in the preheated oven (electric cooker: 225 °C/circulating air: 200 °C/gas: level 4) for 6-7 minutes. Let them cool down