Double chocolate orange éclairs - Multix

Ingredients

• 140g plain flour, sieved
• 100g unsalted butter
• 1 small pinch fine salt
• 4 large eggs
• ½ cup milk
• ½ cup water
• 300ml thickened cream whipped
• 1 tablespoon icing sugar
• finely grated zest of 1 orange
• 100ml double cream
• 1 tablespoon soft light brown sugar
• 1 teaspoon vanilla extract
• 100g dark chocolate (70%), chopped
• 25g unsalted butter
• 100g white chocolate chopped (optional)