Just Add Yoghurt

Alright, my first challenge. I admit, I've never cooked a dish combining chocolate and Greek yoghurt before. But how hard could it be? Famous last words. The first thing that came to my head - chocolate tart. A chocolate tart is often made with cream, so I thought...why wouldn't it work with Greek yoghurt instead? A bit of a stretch I know, however it was decided. I'd make a chocolate tart. I started by making a sweet pastry with flour, icing sugar and butter. For the chocolate mixture, I adapted a custard recipe which included: 1 cup of caster sugar, 4 eggs, approximately 100g of Lindt dark chocolate and 1 cup of Greek yoghurt (black swan, low fat). First I whisked the sugar and eggs together. Then I added the Greek yoghurt. Next was melting the dark chocolate. To make sure the custard mixture didn't curdle I added a small amount of it to the dark chocolate. Once mixed together, I added the rest of the custard mixture. I added the chocolate mixture to each pastry cup a...