My favourite is Traidcraft Organic Fair Trade Dark Chocolate which I buy from Uhuru Wholefoods in Oxford. I occasionally buy the Chocolate Magazine from the newsagents and enjoy reading all kinds of fantastic chocolately stuff. Issue 6 has an interesting article on Chocolate and Tea . Ealasaid often has coffee with some good quality dark chocolate, so I feel obliged to join in and have chocolate with my tea. It really is quite difficult to find a good tea match, as the chocolate is so dark and rich.
Tradecraft is good for with tea as it is smoother and less sweet and bitter than others.
Absolutely delicious, with a smooth cardamom flavour which oesn't dominate the delicious smooth dark chocolate. Not over-sweet either. Handmade in West Sussex. They do a chili one too which I haven't tried yet. You eat a square, and at first it really is just a very good quality dark chocolate, not over bitter or over sweet.