Coming very late to the discussion, but I wouldn't be surprised if this book was self pubslished as it was sold alongside calendars and suchlike. I've seen witchy cookbooks/kitchen books and generally they have recipes for celebrating the sabbats plus sometimes seasonal suggestions for making preserves, natural remedies and cleaning and so forth. Common sense stuff really.
Not entirely sure why anyone would think anything about it other than, 'oh, there's a cookbook'.