Ingredients for the sauce: 100 g sugar, 25 g cocoa powder, 300 ml water.
Preheat the oven to 180 C.
Butter a 2 ltr baking dish.
Put the flour, sugar, cocoa, baking powder, Xanthan gum, orange essence, and pinch of salt in larger mixing bowl.
Whisk the eggs and milk.
Add the melted butter to the egg mix. Whisk until combined. Pour the mixture onto the dry ingredients.
Mix together until mixture is smooth.
Stir in the chocolate chunks.
Pour mixture into the baking dish.
Pour the sauce on the pudding mixture.
Bake in the middle of the oven for 30 min.
Serve with ice cream.