Truffles again...

I've been saying that I'd make Trisha some truffles for a while now. I'm seeing her tomorrow evening, so it seemed like as good as time as any! It's the same procedure as usual - this time, the ingredients list is 200g dark chocolate (48% cocoa), 150ml double cream and 1tsp vanilla extract, plus 100g extra dark chocolate (85% cocoa) for the coating.