Or you could use my workaround: Create a 'wishlist' bookmark. I also have bookmarks for 'library' (cookbooks available from our public library that interest me), and 'reading' (not quite wishlist, but I'd like to take a look at a bookshop or borrow them from friends).
The only disadvantage, not a major one, is that you may need to restrict recipe searches to books you actually own: that's why the books I use most are gathered in a 'kitchen shelf' bookmark.