Are we actually progammed to eat unhealthy food - and was sparrow pie really a staple dish during rationing in World War II? This week's Answers to Correspondents tucks into a smorgasbord of food and cooking questions with help from author and Mail on Sunday food columnist Tom Parker Bowles. As always, questions from Daily Mail readers are provided by Charles Legge, editor of the Daily Mail’s long-running Answers to Correspondents column.

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