20 minutes before the end, slowly stir in the coconut milk. Add the spinach one large handful at a time—it may seem like way too much spinach but it wilts down A LOT. With a handful on top, gently push it down into the curry until it's covered and there's room for more. Repeat until all 400g of spinach has been added. It only needs to be left for a few minutes before it's ready to serve.