In a bowl, combine the flour, baking powder, and salt. Mix for 2 minutes. Cut the butter into small cubes and work into the mixture for 3-4 minutes. Add the grated cheese, sesame seeds, and milk. Knead for 5 minutes until the dough is smooth. Add more flour if the dough is too wet.
On a floured surface, roll the dough to about ½ cm (¼ inch) thick. Using a pizza cutter, cut into strips about 1 cm (⅜ inch) wide. Place on a baking sheet and bake at 220 °C (425 °F) for 15-20 minutes until golden brown.