Tamago Boro (also known as egg biscuits, (蛋果子 or 小馒头)) is a very popular snack among kids. You can find them in supermarkets, Japanese specialty stores or local snack shops. My son had never tasted them before. So, he was very excited when he knew that I was going to make them for him.   I have made these Tamago Boro successfully based on a recipe I have adapted and modified from 『君之』的手工烘焙坊....