For the dough melt butter and let it cool down. Mix flour, baking powder and salt in a bowl. Add eggs, liquid butter and 200 ml milk. Quickly knead with your hands to an almost smooth dough. Roll out to a thickness of about 2 cm on some flour. Cut out a total of approx. 16 circles (each approx. 6.5 cm Ø), knead the dough again briefly, roll out and cut out.
Place dough circles with some distance between them on two baking trays lined with baking paper (approx. 35 x 40 cm). Whisk the egg yolk and 1 tbsp. milk. Spread the scones with it. Bake one after the other in the preheated oven for 10-12 minutes. Let them cool down. Serve with clotted cream and e.g. blackberry jam.
TIP: What is Clotted Cream? It is the thick cream that settles on heated, non-homogenised milk. It tastes similar to mascarpone and is available at www.the-british-shop.de.