From her Q & A with Molly Driscoll at the Christian Science Monitor:
Q: During the process of writing the two books, how often were you on the set when the seasons were being filmed?--Marshal Zeringue
A: When I was doing the first book, I wasn't writing it until after the first series wrapped, because obviously when the first series was being filmed, nobody had a clue [of its future success]. For the second series, I went on the set... not a huge amount, to be honest, because I was on such a tight deadline to write the book. I was at my kitchen table, typing, most of the time. I didn't really go for the third series – I had a researcher help me that time because I had to do two books in the first six months of this year.
I mean, I've been to Highclere [Castle, where the "upstairs" world is filmed]. It's a real privilege to go and see it, and Highclere is impressive, but I really like going to Ealing Studios [where the servants' rooms are filmed], because there's something amazing about the fact that they've built it all completely from scratch. They had to imagine, think and source every tiny bit that's on there, and it's so beautifully done, like Mrs. Patmore's kitchen.
There was a really funny thing about the cookbook – in those days, obviously, when you owned a copy of "Mrs. Beaton's Household Recipes," you owned a new copy. But...[read on]