The flower of the Hibiscus sabdariffa plant is often used in infusions to make herbal tea or alternatively as a natural food colouring. It tastes pretty much like ribena so can be brewed for easy drinking. Thus, making it a great drink for CNY entertaining!
Chinese Medical Halls usually sell the dried version, but, you can easily get fresh roselle flowers from an organic farm. Brew a handful of fresh roselle buds with sugar and water for half an hour and you will have a strongly flavoured, floral fragranced drink to enjoy.