Hong Kong egg tarts

I keep looking up the recipe for these but never got round to making them. When the Great British Bakeoff had egg tarts as the technical challenge, I just had to make them. But I didn't want the 'ang mo' version, I wanted the Hong Kong version that we get at home. I was quite nervous when it came to making the custard as I've never made custard from scratch before and have have seen lots of disasters on tv where the custard becomes scrambled eggs. In my nervousness, I forgot to add the vanilla extract to the custard, luckily it still turned out right and was not too eggy. In fact, it was quite yummy if I say so myself!

Cross section of the tart, super smooth custard!