A popular street-food snack that is getting harder to find is put chai goh (earthen bowl pudding).
Heavy, sweet and slightly chewy, put chai goh is made of water, Chinese slab sugar and a combination of rice flour and glutinous rice flour. The mixture is then put into small bowls (hence the name, although some vendors make it in disposable aluminium cups) before being steamed so that it firms up. When you buy it, the vendor will slide the pudding out of the bowl and usually insert two toothpicks to serve as rather flimsy handles. The price is about HK$5 per pudding.
Quite often, put chai goh will have red beans mixed in, which gives it a spotted appearance; or the red beans will be puréed and mixed in, which makes the pudding reddish in colour. It tastes best when still slightly warm; if it's cold, it becomes dense and chewy.