In our series on food for religious festivals, Mridula Baljekar, cook, television presenter and multi-award winning author, introduces us to the Hindu festivals of Diwali, Onam and Holi. In Part 1, Mridula talks us through the meaning and celebration of each festival, the various foods that are eaten and what they represent. In Part 2, she shows us a selection of festival dishes in more detail and demonstrates one or two simple recipes.