(2.3 oz, 5.5 Tbsp) unsalted butter, room temperature • (2.3 oz, 5.5 Tbsp) granulated sugar • egg (L size, about 50g), room temperature • g (2.5 oz) pistachio flour • / ml (2.4 fl oz) milk • g (3.2 oz, 7/10 cup) cake flour • baking powder • g(1.8 oz) chocolate • ※1cup=235cc(USA) • ※muffin mold • cup:height 3.5 cm / 1.4 in, upper diameter 7 cm / 2.8 in, lower diameter 5 cm / 2 in