Amul dark chocolate bar is one of the most affordable dar chocolate bar. I use dark chocolate bar for making Chocolate cakes and chocolate muffins.
Other brands like Cadbury bournville is also good but it is bit expensive as an ingredient to be used. So I prefer Amul dark chocolate bar for these purposes. It is rich and creamy, really gives nice texture to your cakes and cookies. Price is reasonable. I recommend this product for dark chocolate lovers.