A basic ganache really only needs two ingredients: dark chocolate and heavy whipping/double cream. Something to roll the chocolate truffle in would be good too. To test the Cooking for Engineers chcocolate truffles recipe out, I used a 200g bar of Cadbury Bourneville Classic 'Dark'. Actually, it wasn't that dark as the first ingridient was sugar, but I did not notice that until later. In any case, this was to test a recipe and I…