Triple-ginger loaf

Ingredients

• 180 grams (5½ ounces) butter, chopped
• 1/3 cup (75g) firmly packed dark brown sugar
• 1/2 cup (175g) treacle
• 1/2 cup (175g) golden syrup
• 1 cup (250ml) milk
• 1 1/2 teaspoon bicarbonate of soda (baking soda)
• 1 2/3 cup (300g) plain (all-purpose) flour
• 3 teaspoons ground ginger
• 1 1/2 teaspoon ground allspice
• 3/4 cup (165g) crystallised ginger, chopped
• 2 eggs, beaten lightly
• 1/4 teaspoon ground ginger, extra
• Ginger ale icing
• 1/2 cup (125ml) ginger ale
• 20 grams (¾ ounce) butter
• 1 cup (160g) icing (confectioners') sugar
• 3 teaspoons lemon juice