cloth to cover just to slow down the steam from flowing out too fast to affect the cake blossom beautifully, because my steamer cover lid have 2 holes, which actually not an ideal steamer to steam this kind of cake.
yes only made 5 cups, my metal cup size is 3.5 cm(H) x 8 cm(ID) and paper cup size is 7.5 cm inner diameter, if you want to make more cups then you should look for smaller size of metal cup and paper cup. Thanks