Chocolate Orange Waffles

Ingredients 250g/ 9 oz/1 2/3 cups plain (all-purpose) flour 2 tbsp unsweetened cocoa powder 1 orange zest finely grated, fresh sliced 2 eggs 300 ml/10 1/2 fl oz/1 1/4 cups oats or soya milk 2 tbsp butter melted Sunflower oil, for oiling the waffle maker 109ml /3 1/2 fl. Oz/ 1/2 cup maple syrup 125