Orange poppyseed loaf with sour cream frosting

Ingredients

• Sour cream frosting
• 50 gram unsalted butter, at room temperature
• 1/2 cup (80g) icing sugar
• 1/3 cup (80g) sour cream
• 1 tablespoon orange marmalade
• 3/4 cup (110g) self-raising flour
• 1/3 cup (50g) plain flour
• 1/2 cup (110g) caster sugar
• 1 tablespoon poppy seeds
• 125 gram unsalted butter, melted, cooled
• 2 eggs, lightly beaten
• 85 gram orange marmalade
• 1/4 cup (60g) sour cream
• 1 orange, finely grated rind of
• 50 gram thinly sliced candied orange rind, to decorate