Want to cook like you’re back in colonial times (or earlier)? William Rubel has written a book called “The Magic of Fire” which describes how to prepare meals on an open hearth. Rubel burns a fire down to embers and braises vegetables, simmers spelt, roasts fish, and even steams a chocolate cake, all at his fireplace. A founder of the children’s magazine Stone Soup, Rubel will be at Chez Panisse for an open hearth dinner next week, and is also working with Deborah Madison, famous veggie cookbook author.