Steamed savoury sticky rice pudding 筒仔米糕

I had some of the stewed pork 滷肉 left and it is great to make 筒仔米糕 'tong zi mi gao' which is a savoury rice pudding/dumpling. It's again another speciality of Taiwanese snack or small eat (小吃 'xiao chi'). This rice pudding is similar to zhongzi, a lot easier to make without having to know how to wrap with bamboo leaves. Traditionally it is made with bamboo cup that looks like this. Now normally