Steamed orange puddings

Batter

• 150 g unsalted butter, softened and cut into pieces, plus extra for greasing
• 1 orange, zest only, no white pith
• 150 g raw sugar
• 3 eggs
• 200 g self-raising flour
• 1 pinch salt
• 150 g buttermilk
• 1 tsp vanilla bean paste
• 3 sprigs fresh thyme, leaves only (optional)
• 1000 g water

Orange sauce

• 250 g orange juice
• 80 g orange marmalade
• 20 g caster sugar
• 2 oranges, peeled and segmented
• 40 g unsalted butter
• 20 g orange liqueur (optional)
• whipped cream, to serve