Gingerbread scones with lemon glace icing

Ingredients

• 30 gram butter, softened
• 1/4 cup (55g) firmly packed brown sugar
• 1 egg yolk
• 2 1/2 cup (375g) self-raising flour
• 3 teaspoon ground ginger
• 1 1/2 teaspoon ground cinnamon
• 1/4 teaspoon ground clove
• 1 cup (250ml) buttermilk
• 2 tablespoon treacle or golden syrup lemon glacé icing
• 1 cup (160g) icing (confectioners') sugar
• 15 gram butter, melted
• 1 tablespoon lemon juice