Yum! I remember (I have no links or such) that when I was young, we would occasionally get some food in China Town in the city. There was a bakery there that had these, things, that were like a chewy dough covered in a sweet glaze covered with seseme seeds and a sort of plum sauce, jam like substance in the middle. Of a similar size to the Mikados you referenced. They were delicious! Haven't had them in years though! :(