One of the things that I came to love and eat (a lot) is Castella which is essentially egg cake or you can consider it the cousin of our traditional egg steamed sponge cake / 鸡蛋糕 but not quite.
I mean it looks very much like it but it's definitely the cousin, not the twin.
Anyhow...If you ever stumble across an out-of-the-oven-fresh batch of castella> eat immediately and buy extras!
It's widely sold in chain bakeries and well tiny bakeries at the market, I say- go with the market ones!
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And here's a youtube recipe for Castella:
Just watch the first few seconds!! *salivates*